1. Department of Community Health Nursing; Graduate School of Medicine; The University of Tokyo; Bunkyo-ku Tokyo Japan
2. Department of Psychiatry; Nagoya University Graduate School of Medicine; Nagoya Aichi Japan
3. Department of Social Psychiatry; National Institute of Mental Health; Kodaira City Tokyo Japan
4. Department of Nursing; Faculty of Health Sciences; Saitama Prefectural University; Koshigaya City Saitama Japan