Loane K¹, Toozs-Hobson P², Hicks C³
1. Daisy Hill Hospital, 2. Birmingham Women's Hospital, 3. University of Birmingham

Sinclair A¹, Kujawa M¹, Thompson A²
1. Stepping Hill Hospital, Stockport, 2. RAEI, Wiagn

Kulseng-Hanssen S¹, Dyrkorn O A¹, Sandvik L²
1. Dept. Obstet. & Gyn. Asker and Bærum Hospital, 2. Centre for clinical research. Oslo University Hospital Ulleval

Scheiner D¹, Betschart C¹, Werder H², Fink D¹, Perucchini D¹
1. Department of Gynaecology. University Hospital Zurich Switzerland, 2. Department of Obstetrics and Gynaecology, Cantonal Hospital, Uri, Switzerland

Lee K¹, Lee Y¹, Seo J T², Na Y G³, Seo J H⁴, Lee J G⁵, Choo M⁶, Kim J C⁷, Yoon J M⁸, Kim D Y⁹, Yoo E S¹⁰, Lee J Z¹¹
1. Samsung Medical Center, 2. Kwandong University College of Medicine, 3. Chungnam National University College of Medicine, 4. CHA Medical Center, College of Medicine, Pochon Cha University, 5. College of Medicine, Korea University, 6. Asan Medical Center, University of Ulsan College of Medicine, 7. College of Medicine, The Catholic University of Korea, 8. Daehang Hospital, 9. Daegu Catholic University College of Medicine, 10. School of Medicine, Kyungpook National University, 11. College of Medicine, Pusan National University

Trabuco E¹, Klingele C¹, McGree M¹, Gebhart J¹
1. Mayo Clinic