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World J Gastroenterol. Jul 21, 2012; 18(27): 3578-3584
Published online Jul 21, 2012. doi: 10.3748/wjg.v18.i27.3578
Published online Jul 21, 2012. doi: 10.3748/wjg.v18.i27.3578
Weekend and nighttime effect on the prognosis of peptic ulcer bleeding
Young Hoon Youn, Yong Jin Park, Hyojin Park, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 135-720, South Korea
Jae Hak Kim, Department of Internal Medicine, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Gyeonggi-do 410-773, South Korea
Tae Joo Jeon, Department of Internal Medicine, Inje University Sanggye Paik Hospital, Inje University College of Medicine, Seoul 139-707, South Korea
Jae Hee Cho, Department of Internal Medicine, Kwandong University Myungji Hospital, Kwandong University College of Medicine, Gyeonggi-do 412-270, South Korea
Author contributions: Youn YH and Park YJ contributed equally to this work; Youn YH and Park YJ analyzed the data and wrote the paper; Kim JH, Jeon TJ and Cho JH retrieved clinical information from each center; Park H designed the research, and Youn YH finally approved the version to be published.
Correspondence to: Young Hoon Youn, MD, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, 712 Eonjuro, Gangnam-Gu, Seoul 135-720, South Korea. dryoun@yuhs.ac
Telephone: +82-2-20193453 Fax: +82-2-34633882
Received: December 29, 2011
Revised: March 23, 2012
Accepted: April 20, 2012
Published online: July 21, 2012
Revised: March 23, 2012
Accepted: April 20, 2012
Published online: July 21, 2012
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