1 Division of Gastroenterology and Hepatology, Department of Internal Medicine, Taipei Medical University Shuang Ho Hospital, New Taipei City, Taiwan; Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; TMU Research Center for Digestive Medicine, Taipei Medical University, Taipei, Taiwan.
2 Center for Neurointestinal Health, Massachusetts General Hospital, Boston, Massachusetts; Division of Gastroenterology, Massachusetts General Hospital, Boston, Massachusetts; Department of Medicine, Harvard Medical School, Boston, Massachusetts.
3 Center for Neurointestinal Health, Massachusetts General Hospital, Boston, Massachusetts; Division of Gastroenterology, Massachusetts General Hospital, Boston, Massachusetts; Department of Medicine, Harvard Medical School, Boston, Massachusetts. Electronic address: bkuo@partners.org.