1 Department of Gynecology and Oncology, Jagiellonian University, Krakow, Poland; Ludwin & Ludwin Gynecology, Private Medical Center, Krakow, Poland; Centermed, Private Hospital and Clinic, Krakow, Poland.
2 Department of Obstetrics and Gynecology, Wright State University, Boonshoft School of Medicine, Dayton, Ohio; Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China.