Chang C-W, Chang W-H, Shih S-C, Tsai S-J
Division of Gastroenterology, Department of Internal Medicine, Mackay Memorial Hospital and Mackay Medicine, Nursing and Management College, Taipei, Taiwan.
BMJ Case Rep. 2009;2009:bcr2007053389. doi: 10.1136/bcr.2007.053389. Epub 2009 Feb 16.