About Ogawa, Masaki
About Perinatal Medical Center, Tokyo Women's Medical University
About Matsuda, Yoshio
About Department of Obstetrics and Gynecology, International University of Health and Welfare Hospital
About Nakai, Akihito
About Department of Obstetrics and Gynecology, Tama-Nagayama Hospital, Nippon Medical School
About Hayashi, Masako
About Department of Obstetrics and Gynecology, Tama-Nagayama Hospital, Nippon Medical School
About Sato, Shoji
About Maternal and Perinatal Care Center, Oita Prefectural Hospital Bunyo 476
About Matsubara, Shigeki
About Department of Obstetrics and Gynecology, Jichi Medical University
About European Journal of Obstetrics Gynecology and Reproductive Biology