1. Third Department of Internal Medicine Interdisciplinary Graduate School of Medicine and Engineering University of Yamanashi Yamanashi Japan
2. Center for Birth Cohort Studies University of Yamanashi Chuo City, Yamanashi Japan
3. Department of Health Sciences School of Medicine University of Yamanashi Chuo City, Yamanashi Japan
4. Department of Obstetrics and Gynecology University of Yamanashi Yamanashi Japan