- VVOG: Vlaamse Vereniging voor Obstetrie en Gynaecologie
- NVOG: Nederlandse Vereniging voor Obstetrie en Gynaecologie
- ACOG: American Congress of Obstetricians and Gynecologists
- RCOG: Royal College of Obstetricians and Gynecologists
- SOGC: Society of Obstetricians and Gynecologists of Canada
- FIGO: International Federation of Gynecology and Obstetrics
- VVE: Vlaamse Vereniging voor Echografie
- SPE: Studiecentrum voor Perinatale Epidemiologie
- AIUM: American Institute of Ultrasound in Medicine
- ISUOG: International Society of Ultrasound in Obstetrics and Gynecology
- ESC: European Society of Contraception and Reproductive Health
- ISPD: International Society of Prenatal Diagnosis
- CEBAM: Belgian Centre for Evidence-Based Medicine
- NICE: National Institute for Health and Clinical Excellence