作者单位：
Centre for Epidemiology and Biostatistics, Medical School, Leeds University, Leeds, United Kingdom
[1]
Gastroenterology Division, McMaster University, Health Sciences Centre, Hamilton, ON, Canada
[2]
Leeds Gastroenterology Institute, St. James's University Hospital, Bexley Wing, Beckett Street
[3]
发布时间
2013-11-20
换一批
