1. Academic Medical Center, University of Amsterdam; Center for Reproductive Medicine, Department of Obstetrics and Gynecology; PO Box 22700 Amsterdam Netherlands 1105 AZ
2. Academic Medical Center, University of Amsterdam; Department of Obstetrics & Gynecology; PO Box 22700 1100 DE Amsterdam Netherlands 1105 AZ
3. Spaarne Hospital; Department of Obstetrics and Gynaecology; Hoofddorp Netherlands
4. Monash University; Department of Obstetrics and Gynaecology; 246 Clayton Road Clayton Victoria Australia 3168
5. Amsterdan UMC, University of Amsterdam; Center for Reproductive Medicine; Meibergdreef 9 Amsterdam Netherlands 1105 AZ
6. Amsterdam UMC, University of Amsterdam; Center for Reproductive Medicine; Meibergdreef 9 Amsterdam Netherlands 1105 AZ
7. Amsterdam UMC, University of Amsterdam; Center for Reproductive Medicine, Department of Obstetrics and Gynaecology; Meibergdreef 9 Amsterdam Netherlands 1100 DE