1. Faculty of Nursing, Josai International University, Togane 283-8555, Japan
2. Kitamura Institute of Mental Health Tokyo, Tokyo 151-0063, Japan
3. Department of Obstetrics & Gynecology, Faculty of Medicine, Juntendo University, Tokyo 113-8421, Japan
4. Aiiku Research Institute for Maternal, Child Health and Welfare, Imperial Gift Foundation Boshi-Aiiku-Kai, Tokyo 106-8580, Japan
5. Kitamura KOKORO Clinic Mental Health, Tokyo 151-0063, Japan
6. Department of Community Mental Health & Law, National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo 187-8553, Japan
7. Department of Midwifery and Women’s Health, Division of Health Sciences and Nursing, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
8. T. and F. Kitamura Foundation for Studies and Skill Advancement in Mental Health, Tokyo 151-0063, Japan
9. Department of Psychiatry, Graduate School of Medicine, Nagoya University, Nagoya 464-8601, Japan