1. Department of Medicine, Division of Integrative Medicine, School of Medicine, Johns Hopkins University, Glen Burnie, Maryland, USA
2. Depression Clinical and Research Program, School of Medicine, Massachusetts General Hospital, Harvard University, Boston, Massachusetts, USA
3. Department of Acupuncture and Moxibustion, College of Korean Medicine, Kyung Hee University, Dongdaemun-gu, Seoul, Korea
4. Division of Gastroenterology and Hepatology, Department of Medicine, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA