Kazuhiro Tamura1, Mikihiro Yoshie1, Takako Ohmaru2, Kiyoko Kato2, Gen Ishikawa3, Toshiyuki Takeshita3, Junya Kojima4,Hirotaka Nishi4, Keiichi Isaka4
(1. Department of Endocrine and Neural Pharmacology, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan, 2. Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kyushu Univ.,, Fikuoka, Japan, 3. Department of Obstetrics and Gynecology, Nippon Medical School, Tokyo, Japan, 4. Department of Obstetrics and Gynecology, Tokyo Medical University, Tokyo, Japan)