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Predictors and prognostic impact of post-operative atrial fibrillation in patients with hip fracture surgery

World Journal of Clinical Cases 2022年第11期10卷 3379-3388页

作者： Seong Jun Bae Chang Hee Kwon Tae-Young kim Haseong Chang Bum sung kim sung hea kim Hyun-Joong kim Department of Internal Medicine Konkuk University Medical CenterSeoul 05030South Korea Department of Orthopaedic Surgery Konkuk University Medical CenterSeoul 05030South Korea

BACKGROUND Atrial fibrillation(AF)is the most common arrhythmia developing in postoperative patients.Limited data are available regarding pre-operative risk factors and prognostic impact of post-operative AF(POAF)following hip fracture surgery(HFS)in Korean population.AIM We aimed to investigate the incidence,predictors,and hospital prognosis of POAF in HFS patients.METHODS This study included 245 patients without history of AF who underwent HFS between August 2014 and November 2016.POAF was defined as new-onset AF that occurred during hospitalization after HFS.RESULTS Twenty patients(8.2%)experienced POAF after HFS.POAF developed on median post-operative day 2(interquartile range,1–3).Multivariable logistic regression analysis showed that age[odds ratio(OR),1.111;95%confidence interval(CI),1.022–1.209],chronic obstructive pulmonary disease(COPD)(OR,6.352;95%CI,1.561–25.841)and E/e’ratio(OR,1.174;95%CI,1.002–1.376)were significant predictors of POAF.Patients with POAF had a significantly higher intensive care unit admission rate(55.0%vs 14.7%,Pheart failure(45.0%vs 10.7%,Pheart failure(OR,4.856;95%CI,1.437–16.411)and intensive care unit admission(OR,6.615;95%CI,2.112–20.718).CONCLUSION POAF was frequently developed in elderly patients following HFS.Age,COPD and elevated E/e’ratio were found as significant predictors of POAF in HFS patients.Patients with POAF significantly experienced intensive care unit admission and incident congestive heart failure during hospitalization.

关键词： Atrial fibrillation Post-operative Predictor Prognosis Hip fracture surgery

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Association between preoperative high sensitive troponin I levels and cardiovascular events after hip fracture surgery in the elderly

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Journal of Geriatric Cardiology 2018年第3期15卷 215-221页

作者： Bum sung kim Tae-Hoon kim Jeong-Hwan Oh Chang Hee Kwon sung hea kim Hyun-Joong kim Heung Kon Hwang Sang-Man Chung in-gu Seoul Republic of Korea Department of Orthopedic surgery Konkuk University Medical Center 120-1 Neungdong-ro Hwayang-dong Gwangjin-guSeoulRepublic of Korea

ObjectiveCardiovascular 复杂并发症在老新潮的破裂病人贡献手术后的病态和死亡。有限数据关于外科手术前的风险因素哪个预言心血管的功课追随者臀部骨折外科(HFS ) 是可得到的。我们使用了高敏感的 troponin 我(hs-TnI ) 试金和临床... 详细信息

ObjectiveCardiovascular 复杂并发症在老新潮的破裂病人贡献手术后的病态和死亡。有限数据关于外科手术前的风险因素哪个预言心血管的功课追随者臀部骨折外科(HFS ) 是可得到的。我们使用了高敏感的 troponin 我(hs-TnI ) 试金和临床的参数在老新潮的破裂 patients.MethodFrom 2014 年 8 月与主要不利心脏的事件(向) 联系了识别外科手术前的风险因素到 2016 年 11 月，有新潮的骨折的 575 个病人在一张回顾的、单个中心的注册表被注册。262 个这些病人的一个总数经历了 HFS 和 hs-TnI 试金。向被定义为手术后的所有原因死亡，心失败(HF ) ，新发作的 atrial 纤维性颤动(AF ) ，心肌的梗塞(MI ) 和发生在 90 天 postoperative.ResultsOf 以内的心血管的再进医院 262 个 HFS 病人，开发的向在 65 的后面的 HFS (24.8%) 。有向的病人是肾的不足，冠的动脉疾病，优先的 HF，低左室的喷射部分和贝它 blockers 的使用的更旧、有的更高的率；支持大脑的 natriuretic 肽(NT-proBNP ) 和更高修订的心脏的风险索引的 hs-TnI 和 N 终端高级。外科手术前的 hs-TnI 6.5 ng/L 与手术后的 HF，新发作的 AF 和向的高风险被联系。在 multivariable 分析，为向的外科手术前的独立预言者是很长时间 > 80 年[调整危险比率(HR ) ：1.79， 95% 充满信心的间隔(CI ) ：1.03-3.13， P = 0.04 ] ，左室的喷射部分(LVEF ) 6.5 ng/L (调整 HR：3.75， 95% CI：2.09-6.17， P < 0.01 ).ConclusionIn 经历 HFS 的有新潮的骨折的老病人，对 hs-TnI 的一个外科手术前的评价可以帮助心血管的复杂并发症的风险精炼。

关键词：外科手术心血管骨折敏感事件风险因素协会有限数据

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Comparison of macular changes according to the etiology of optic neuritis:a cross-sectional study

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International Journal of Ophthalmology(English edition) 2024年第4期17卷 686-692页

作者： Yeji Moon sung-Min kim Jae Ho Jung Department of Ophthalmology Asan Medical CenterUniversity of Ulsan College of MedicineSeoul 05505Republic of Korea Department of Neurology Seoul National University HospitalSeoul 03080Republic of Korea Department of Ophthalmology Seoul National University HospitalSeoul 03080Republic of Korea Department of Ophthalmology Seoul National University College of MedicineSeoul 03080Republic of Korea

AIM:To compare the macular structure including foveal thickness among patients with optic neuritis(ON)according to the etiology and to investigate the possible correlation between structural and visual outcomes METHODS:In this retrospective cross-sectional study,the clinical data of patients with aquaporin-4 immunoglobulin G-related ON(AQP4 group,40 eyes),myelin oligodendrocyte glycoprotein IgG-related ON(MOG group,31 eyes),and multiple sclerosis-related ON(MS group,24 eyes)were obtained.The retinal thickness of the foveal,parafoveal and perifoveal regions were measured.Visual acuity(VA),visual field index and mean deviation were measured as visual outcomes.RESULTS:The AQP4 group showed a significantly thinner fovea(226.4±13.4μm)relative to the MOG(236.8±14.0μm,P=0.015)and MS(238.9±14.3μm,P=0.007)groups.The thickness in the parafoveal area also was thinner in the AQP4 group,though the difference in perifoveal retinal thickness was not significant.Foveal thickness was correlated with VA in the AQP4 group(coefficientρ=-0.418,P=0.014),but not in the MOG and MS groups(P=0.218 and P=0.138,respectively).There was no significant correlation between foveal thickness and visual field test in all three groups.CONCLUSION:The significant thinning in the fovea and parafoveal areas in the AQP4 group compared to the MOG and MS groups are found.Additionally,macular changes in AQP4-ON show a significant correlation with VA.The results provide the possibility that retinal structural damage could reflect functional damage in AQP4-ON,distinct from MOGON and MS-ON.

关键词： foveal thickness optic neuritis aquaporin-4 immunoglobulin myelin oligodendrocyte glycoprotein multiple sclerosis

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Soleus arthrogenic muscle inhibition following acute lateral ankle sprain correlates with symptoms and ankle disability but not with postural control

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Journal of Sport and health Science 2024年第4期13卷 559-568,F0003页

作者： Kyung-Min kim Joo-sung kim Alan R.Needle Department of Sport Science Sungkyunkwan UniversitySuwon-si 16419Republic of Korea Department of health and Human Performance Texas State UniversitySan MarcosTX 78666USA Department of Public health&Exercise Science Appalachian State UniversityBooneNC 28608USA Department of Rehabilitation Science Appalachian State UniversityBooneNC 28608USA

Background:Acute lateral ankle sprains(ALAS)are associated with long-term impairments and instability tied to altered neural excitability.Arthrogenic muscle inhibition(AMI)has been observed in this population;however,relationships with injury-related impairments are unclear,potentially due to the resting,prone position in which AMI is typically measured.Assessing AMI during bipedal stance may provide a better understanding of this relationship.Methods:AMI was assessed in 38 young adults(19 ALAS within 72 h of injury:10 males,21.4±2.7 years;19 healthy controls:10 males,21.9±2.2 years;mean±SD)using the Hoffmann reflex(H-reflex)during bipedal stance.Electrical stimulation was administered to identify the _(max)imal H-reflex(H_(max))and _(max)imal motor response(M_(max))from the soleus,fibularis longus,and tibialis anterior muscles.The primary outcome measure was the H_(max)/M_(max) ratio.Secondary outcomes included acute symptoms(pain and swelling),postural control during bipedal stance,and self-reported function.Results:No significant group-by-limb interactions were observed for any muscle.However,a significant group main effect was observed in the soleus muscle(F(1,35)=6.82,p=0.013),indicating significantly lower H_(max)/M_(max) ratios following ALAS(0.38±0.20)compared to healthy controls(0.53±0.16).Furthermore,lower H_(max)/M_(max) ratios in the soleus significantly correlated with acute symptoms and self-reported function but not with postural control.Conclusion:This study supports previous evidence of AMI in patients with ALAS,providing insight into neurophysiologic impacts of musculoskeletal injury.Our results suggest that assessing AMI in a standing position following acute injury may provide valuable insight into how AMI develops and guide potential therapeutic options to curb and offset the formation of joint instability.

关键词： Acute injuries Balance Hoffmann reflex Neural excitability Patient-reported outcomes

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Removal of intrahepatic bile duct stone could reduce the risk of cholangiocarcinoma: A single-center retrospective study in South Korea

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World Journal of Clinical Cases 2024年第5期12卷 913-921页

作者： Tae In kim sung Yong Han Jonghyun Lee Dong Uk kim Division of Gastroenterology Biomedical Research InstitutePusan National University HospitalBusan 49241South Korea Department of Internal Medicine Pusan National UniversityCollege of MedicineYangsan 50612South Korea

BACKGROUND Intrahepatic duct(IHD)stones are among the most important risk factors for cholangiocarcinoma(CCC).Approximately 10%of patients with IHD stones develop CCC;however,there are limited studies regarding the effect of IHD stone removal on CCC development.AIM To investigate the association between IHD stone removal and CCC development.METHODS We retrospectively analyzed 397 patients with IHD stones at a tertiary referral center between January 2011 and December 2020.RESULTS CCC occurred in 36 of the 397 enrolled patients.In univariate analysis,chronic hepatitis B infection(11.1%vs 3.0%,P=0.03),carbohydrate antigen 19-9(CA19-9,176.00 vs 11.96 II/mL,P=0.010),stone located in left or both lobes(86.1%vs 70.1%,P=0.042),focal atrophy(52.8%vs 26.9%,P=0.001),duct stricture(47.2%vs 24.9%,P=0.004),and removal status of IHD stone(33.3%vs 63.2%,Pupper normal limit,carcinoembryonic antigen>upper normal limit,stones located in the left or both lobes,focal atrophy,and complete removal of IHD stones without recurrence were independent factors influencing CCC development.However,the type of removal method was not associated with CCC risk.CONCLUSION Complete removal of IHD stones without recurrence could reduce CCC risk.

关键词： Intrahepatic bile duct stone Cholangiocarcinoma Percutaneous transhepatic cholangioscopy Endoscopic retrograde cholangiopancreatography Carbohydrate antigen 19-9

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Comparison of commercial silicon-based anode materials for the design of a high-energy lithium-ion battery

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Nano Research 2024年第6期17卷 5270-5277页

作者： Minhong Choi Eunhan Lee Jaekyung sung Namhyung kim Minseong Ko Division of Convergence Materials Engineering Pukyong National UniversityBusan 48547Republic of Korea Department of Materials Engineering and Convergence Technology Gyeongsang National University501 Jinju-daeroJinju 52828Republic of Korea Department of Materials System Engineering Pukyong National UniversityBusan 48547Republic of Korea

Silicon(Si)is considered a potential alternative anode for next-generation Li-ion batteries owing to its high theoretical capacity and abundance.However,the commercial use of Si anodes is hindered by their large volume expansion(~300%).Numerous efforts have been made to address this issue.Among these efforts,Si-graphite co-utilization has attracted attention as a reasonable alternative for high-energy anodes.A comparative study of representative commercial Si-based materials,such as Si nanoparticles,Si suboxides,and Si−Graphite composites(SiGC),was conducted to characterize their overall performance in high-energy lithium-ion battery(LIB)design by incorporating conventional graphite.Nano-Si was found to exhibit poor electrochemical performance,with severe volume expansion during cycling.Si suboxide provided excellent cycling stability in a full-cell evaluation with stable volume variation after 50 cycles,but had a large irreversible capacity and remarkable volume expansion during the first cycle.SiGC displayed a good initial Coulombic efficiency and the lowest volume change in the first cycle owing to the uniformly distributed nano-Si layer on graphite;however,its long-term cycling stability was relatively poor.To complement each disadvantage of Si suboxide and SiGC,a new combination of these Si-based anodes was suggested and a reasonable improvement in overall battery performance was successfully achieved.

关键词： silicon-based anode high-energy comparison lithium ion battery blended electrode

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Changes in structural plasticity of hippocampal neurons in an animal model of multiple sclerosis

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Zoological Research 2024年第2期45卷 398-414页

作者： Poornima D.E.Weerasinghe-Mudiyanselage Sohi Kang Joong-Sun kim sung-Ho kim Hongbing Wang Taekyun Shin Changjong Moon Department of Veterinary Anatomy and Animal Behavior College of Veterinary Medicine and BK21 FOUR ProgramChonnam National UniversityGwangju 61186Republic of Korea Department of Anatomy and Convergence Medical Science Institute of Health SciencesCollege of MedicineGyeongsang National UniversityJinju 52727Republic of Korea Department of Physiology and Neuroscience Program Michigan State UniversityEast LansingMI 48824USA Department of Veterinary Anatomy College of Veterinary Medicine and Veterinary Medical Research InstituteJeju National UniversityJeju 63243Republic of Korea

Structural plasticity is critical for the functional diversity of neurons in the brain.Experimental autoimmune encephalomyelitis(EAE)is the most commonly used model for multiple sclerosis(MS),successfully mimicking its key pathological features(inflammation,demyelination,axonal loss,and gliosis)and clinical symptoms(motor and non-motordysfunctions).Recentstudieshave demonstrated the importance of synaptic plasticity in EAE pathogenesis.In the present study,we investigated the features of behavioral alteration and hippocampal structural plasticity in EAE-affected mice in the early phase(11 days post-immunization,DPI)and chronic phase(28DPI).EAE-affected mice exhibited hippocampus-related behavioral dysfunction in the open field test during both early and chronic phases.Dendritic complexity was largely affected in the cornu ammonis 1(CA1)and CA3 apical and dentate gyrus(DG)subregions of the hippocampus during the chronic phase,while this effect was only noted in the CA1 apical subregion in the early phase.Moreover,dendritic spine density was reduced in the hippocampal CA1 and CA3 apical/basal and DG subregions in the early phase of EAE,but only reduced in the DG subregion during the chronic phase.Furthermore,mRNA levels of proinflammatory cytokines(Il1β,Tnfα,and Ifnγ)and glial cell markers(Gfap and Cd68)were significantly increased,whereas the expression of activity-regulated cytoskeletonassociated protein(ARC)was reduced during the chronic phase.Similarly,exposure to the aforementioned cytokines in primary cultures of hippocampal neurons reduced dendritic complexity and ARC expression.Primary cultures of hippocampal neurons also showed significantly reduced extracellular signal-regulated kinase(ERK)phosphorylation upon treatment with proinflammatory cytokines.Collectively,these results suggest that autoimmune neuroinflammation alters structural plasticity in the hippocampus,possibly through the ERK-ARC pathway,indicating that this alteration may be associated with hippocampal dysfunctions in EAE.

关键词： Activity-regulated cytoskeleton-associated protein Anxiety-like behavior Experimental autoimmune encephalomyelitis Hippocampal dysfunction Neuroinflammation

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Trends in colorectal cancer incidence according to an increase in the number of colonoscopy cases in Korea

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World Journal of Gastrointestinal Oncology 2024年第1期16卷 51-60页

作者： Ga Hee kim Yeong Chan Lee Tae Jun kim sung Noh Hong Dong Kyung Chang Young-Ho kim Dong-Hoon Yang Chang Mo Moon Kyunga kim Hyun Gun kim Eun-Ran kim Division of Gastroenterology Department of Internal MedicineAsan Medical CenterUniversity of Ulsan College of MedicineSeoul 05505South Korea Department of Digital health Samsung Advanced Institute for Health Science and TechnologySungkyunkwan University School of MedicineSeoul 06351South Korea Division of Gastroenterology Department of Internal MedicineSamsung Medical CenterSungkyunkwan University School of MedicineSeoul 06351South Korea Division of Gastroenterology Department of Internal MedicineEwha Womans UniversitySeoul 07985South Korea Biomedical Statistics Center Samsung Medical CenterSeoul 06351South Korea Division of Gastroenterology Department of Internal MedicineSoonchunhyang University College of MedicineSeoul 04401South Korea

BACKGROUND The incidence of colorectal cancer(CRC)and preinvasive CRC(e.g.,early colon cancer and advanced adenoma)is gradually increasing in several countries.AIM To evaluate the trend in incidence of CRC and preinvasive CRC according to the increase in the number of colonoscopies performed in Korea.METHODS This retrospective cohort study enrolled Korean patients from 2002 to 2020 to evaluate the incidence of CRC and preinvasive CRC,and assess the numbers of diagnostic colonoscopies and colonoscopic polypectomies.Colonoscopy-related complications by age group were also determined.RESULTS The incidence of CRC showed a rapid increase,then decreased after 2012 in the 50-75 year-age group.During the study period,the rate of incidence of preinvasive CRC increased at a similar level in patients under 50 and 50-75 years of age.Since 2009,the increase has been rapid,showing a pattern similar to the increase in colonoscopies.The rate of colonoscopic polypectomy in patients aged under 50 was similar to the rate in patients over 75 years of age after 2007.The rate of complications after colonoscopy and related deaths within 3 mo was high for those over 75 years of age.CONCLUSION The diagnosis of preinvasive CRC increased with the increase in the number of colonoscopies performed.As the risk of colonoscopy-related hospitalization and death is high in the elderly,if early lesions at risk of developing CRC are diagnosed and treated under or at the age of 75,colonoscopy-related complications can be reduced for those aged 76 years or over.

关键词： Colorectal cancer Preinvasive colorectal cancer Colorectal polypectomy Colonoscopy

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Experience of primary intestinal lymphangiectasia in adults: Twelve case series from a tertiary referral hospital

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World Journal of Clinical Cases 2024年第4期12卷 746-757页

作者： Ji Eun Na Ji Eun kim Sujin Park Eun Ran kim sung Noh Hong Young-Ho kim Dong Kyung Chang Department of Internal Medicine Inje University Haeundae Paik HospitalBusan 48108South Korea Department of Medicine Samsung Medical CenterSeoul 06351South Korea Department of Pathology Samsung Medical CenterSeoul 06351South Korea

BACKGROUND While primary intestinal lymphangiectasia(PIL)is considered a rare condition,there have been several reported cases in adults.Nevertheless,the absence of clear guidance from diagnosis to treatment and prognosis poses challenges for both physicians and patients.AIM To enhance understanding by investigating clinical presentation,diagnosis,treatment,complications,and prognoses in adult PIL cases.METHODS We enrolled adult patients diagnosed with PIL between March 2016 and September 2021.The primary outcome involved examining the diagnosis and treatment process of these patients.The secondary outcomes included identifying complications(infections,thromboembolism)and assessing prognoses(frequency of hospitalization and mortality)during the follow-up period.RESULTS Among the 12 included patients,peripheral edema(100%)and diarrhea(75%)were the main presenting complaints.Laboratory tests showed that all the pati-ents exhibited symptoms of hypoalbuminemia and hypogammaglobulinemia.Radiologically,the predominant findings were edema of the small intestine(67%)and ascites(58%).The typical endoscopic finding with a snowflake appearance was observed in 75%of patients.Among the 12 patients,two responded positive-ly to octreotide and sirolimus,and eight who could undergo maintenance therapy discontinued subsequently.Complications due to PIL led to infection in half of the patients,thromboembolism in three patients,and one death.CONCLUSION PIL can be diagnosed in adults across various age groups,with different severity and treatment responses among patients,leading to diverse complications and prognoses.Consequently,tailored treatments will be necessary.We anticipate that our findings will contribute to the management of PIL,an etiology of protein-losing enteropathy.

关键词： Primary intestinal lymphangiectasia in adults Protein-losing enteropathy Diagnosis Treatment Prognosis

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Effect of characteristics and distribution of Mg_(17)Al_(12)precipitates on tensile and bending properties of high-Al-containing Mg alloys

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Journal of Magnesium and Alloys 2024年第2期12卷 779-793页

作者： Sumi Jo Gyo Myeong Lee Jong Un Lee Young Min kim sung Hyuk Park School of Materials Science and Engineering Kyungpook National UniversityDaegu 41566Republic of Korea Department of Magnesium Korea Institute of Materials ScienceChangwon 51508Republic of Korea

This study investigates the effect of characteristics and distribution of Mg_(17)Al_(12)precipitates on the uniaxial tensile and three-point bending properties of extruded Mg alloys containing high Al contents.The extruded Mg–9Al–1Zn–0.3Mn(AZ91)alloy contains lamellar-structured Mg_(17)Al_(12)discontinuous precipitates along the grain boundaries,which are formed via static precipitation during natural air cooling.The extruded Mg–11Al–1Zn–0.3Mn(AZ111)alloy contains spherical Mg_(17)Al_(12)precipitates at the grain boundaries and inside the grains,which are formed via dynamic precipitation during extrusion.Due to inhomogeneous distribution of precipitates,the AZ111 alloy consists of two different precipitate regions:precipitate-rich region with numerous precipitates and finer grains and precipitate-scarce region with a few precipitates and coarser grains.The AZ111 alloy exhibits a higher tensile strength than the AZ91 alloy because its smaller grain size and more abundant precipitates result in stronger grain-boundary hardening and precipitation hardening effects,respectively.However,the tensile elongation of the AZ111 alloy is lower than that of the AZ91 alloy because the weak cohesion between the dynamic precipitates and the matrix facilitates the crack initiation and propagation.During bending,a macrocrack initiates on the outer surface of bending specimen in both alloys.The AZ111 alloy exhibits higher bending yield strength and lower failure bending strain than the AZ91 alloy.The bending specimens of the AZ91 alloy have similar bending formability,whereas those of the AZ111 alloy exhibit considerable differences in bending formability and crack propagation behavior,depending on the distribution and number density of precipitates in the specimen.In bending specimens of the AZ111 alloy,it is found that the failure bending strain(ε_(f,bending))is inversely proportional to the area fraction of precipitates in the outer zone of bending specimen(A_(ppt)),with a relationship ofε_(f,bending)=–0.1A_(ppt)+5.86.

关键词： Mg–Al alloy Extrusion Bending Precipitation Microstructure

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