1. Free Medical University; Center for Reproductive Medicine; De Boelelaan 1105 Amsterdam Netherlands 1081 HV
2. Medisch Spectrum Twente; Enschede Netherlands
3. Zaans Medisch Centrum; Department of Obstetrics and Gynaecology; koningin Julianaplein 58 Zaandam Netherlands 1502 DV
4. The University of Adelaide; The Robinson Institute, School of Paediatrics and Reproductive Health; Level 3, Medical School South Building Frome Road Adelaide South Australia Australia SA 5005
5. Academic Medical Center, University of Amsterdam; Center for Reproductive Medicine; Meibergdreef 9 Amsterdam Netherlands 1105 AZ