1. Department of Gynecology and Obstetrics (H.T., M.U., Y.M., K.S., A.H., I.K.), Kyoto University Graduate School of Medicine, Kyoto 606–8507, Japan;
2. Department of Obstetrics and Gynecology (Y.S.), Otsu Red Cross Hospital, Otsu 520-8511, Japan;
3. Tissue Regeneration (T.S.), Department of Bio-Matrix, Tokyo Medical and Dental University, Tokyo 113-8549, Japan