1. Department of Obstetrics and Gynecology (T.K., A.T., N.T.), Toho University Medical Center Sakura Hospital, Chiba 285-8741, Japan;
2. Department of Analytical Research (S.H., Y.W., H.M., M.O.), ASKA Pharma Medical Co Ltd, Kawasaki 213-8522, Japan;
3. Department of Urology (Y.S.), Gunma University Graduate School of Medicine, Maebashi 371-8511, Japan;
4. Department of Clinical Analysis (K.Y.), Tohoku Pharmaceutical University, Sendai 981-8558, Japan