Weekly pattern of emergency room admissions for peptic ulcers: A population-based study
Li-Ting Kao, Graduate Institute of Life Science, National Defense Medical Center, Taipei 110, Taiwan
Ming-Chieh Tsai, Division of Gastroenterology, Department of Internal Medicine, Cathay General Hospital, Taipei 110, Taiwan
Herng-Ching Lin, Sleep Research Center, Taipei Medical University Hospital, Taipei 110, Taiwan
Femi Pai, School of Medicine, Taipei Medical University, Taipei 110, Taiwan
Cha-Ze Lee, Department of Internal Medicine, National Taiwan University Hospital and College of Medicine, Taipei 110, Taiwan
Author contributions: Kao LT and Tsai MC conceived of and designed the study; Lin HC analyzed the data; Lee CZ, Kao LT, Pai F, and Kao LT wrote the manuscript.
Ethics approval: This study was based on de-identified secondary data from the LHID2000 released to the public for research purposes, and thus was exempted from full review by the National Defense Medical Center’s Internal Review Board.
Informed consent: This study retrieved data from an administrative dataset. Therefore, informed consent was not needed.
Conflict-of-interest: The authors declare no conflicts of interest.
Data sharing: The LHID2000, which is open to researchers, is available from the National Health Research Institute of Taiwan (http://nhird.nhri.org.tw/date_01.html); dataset available from email@example.com.
Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Correspondence to: Dr. Cha-Ze Lee, Department of Internal Medicine, National Taiwan University Hospital and College of Medicine, No. 1, Changde St, Taipei 110, Taiwan. firstname.lastname@example.org
Telephone: +886-2-2736 Fax: +886-2-23789788
Received: November 7, 2014
Peer-review started: November 8, 2014
First decision: November 26, 2014
Revised: December 9, 2014
Accepted: January 8, 2015
Article in press: January 8, 2015
Published online: March 21, 2015