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 MedicineTaipei Medical University, Taipei; TMU Research Center for Digestive Medicine, Taipei Medical University, Taipei, Taiwan.
2 Center for Neurointestinal HealthMassachusetts General Hospital, Boston, Massachusetts; Division of Gastroenterology, Massachusetts General HospitalBoston, Massachusetts; Department of Medicine, Harvard Medical School, Boston, Massachusetts.