1. Department of Obstetrics and Gynaecology; Amsterdam UMC, VU Universiteit Amsterdam, De Boelelaan 1117; Amsterdam Netherlands
2. Department of Reproductive Medicine; Máxima MC; Eindhoven Netherlands
3. Academic Endometriosis Center, Department of Reproductive Medicine; Amsterdam UMC; Amsterdam Netherlands
4. Department of Obstetrics and Gynaecology; Máxima Medisch Centrum; Veldhoven Netherlands
5. Department of Obstetrics and Gynaecology; Monash University; Clayton Australia