Chang Chen-Jung, Su Chien-Wei, Hou Ming-Chih
Division of Gastroenterology, Department of Medicine, Taipei Veterans General Hospital and School of Medicine, National Yang-Ming University, Taipei, Taiwan.
Gastroenterology. 2009 Nov;137(5):e7-8. doi: 10.1053/j.gastro.2009.02.084. Epub 2009 Sep 30.