1. Department of Obstetrics and Gynecology, Maternal and Child Hearth Center, Aiiku Hospital, Tokyo, Japan
2. Division of Reproductive Medicine, Sugiyama Clinic, Tokyo, Japan
3. Department of Health Policy and Management, School of Medicine, Keio University, Tokyo, Japan
4. Department of Global Health Policy, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
5. Department of Breast Surgery, Jyoban Hospital of Tokiwa Foundation, Iwaki, Fukushima, Japan
6. Department of Internal Medicine, Jyoban Hospital of Tokiwa Foundation, Iwaki, Fukushima, Japan