[1] Case Western Reserve Univ, Univ Hosp Cleveland Med Ctr, Sch Med, Cleveland, OH 44106 USA
[2] Bayer, Reading, England
[3] Bayer Consumer Care, Basel, Switzerland
[4] Bayer AG, Berlin, Germany
[5] Adelphi Real World, Bollington, England
[6] Univ Pavia, Dept Clin Surg Diagnost & Pediat Sci, Pavia, Italy
[7] IRCCS San Matteo Fdn, Res Ctr Reprod Med, Gynecol Endocrinol & Menopause Obstet & Gynecol Un, Pavia, Italy