Affiliation: | aDepartment of Psychosomatic Medicine, Respiratory and Stress Care Center, Kagoshima University Hospital, and Department of Behavioral Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima-City, Japan;bDepartment of Gastroenterology, Faculty of Medicine, University of Sao Paulo, Ribeirão Preto Campus, Ribeirão Preto, Brazil. |