Project Professor of Digital Mental Health,Graduate School of Medicine, The University of Tokyo
Professor of Industrial Hygiene, Hansung University Dean of Graduate School, Hansung University
Co-Manager, Musculoskeletal Health Program, National Institute for Occupational Safety and Health (NIOSH), Centers for Disease Control and Prevention (CDC), USA
Head and Consultant, Occupational Medicine Service, Sengkang General Hospital
Chang Gung Medical Foundation