1. Graduate School of Arts and Sciences, University of Tokyo, Tokyo, Japan
2. Choshi Mental Clinic, Chiba, Japan
3. Cabinet Secretariat, Government of Japan, Tokyo, Japan
4. Chiba Hospital, Chiba, Japan
5. Department of Nursing, Chiba College of Health Science, Chiba, Japan
6. Department of Mental Health Policy and Evaluation, National Institute of Mental Health, National Centre of Neurology and Psychiatry, Tokyo, Japan