1. Department of Obstetrics and Gynecology, Stavanger University Hospital, Stavanger, Norway
2. Department of Clinical Science, University of Bergen, Norway
3. FB INW, Hochschule Merseburg, Germany
4. Centre for Cardiovascular Science, Edinburgh University, Edinburgh, United Kingdom of Great Britain and Northern Ireland
5. Department of Gastroenterology and Digestive Endoscopy, Champalimaud Foundation, Lisboa, Portugal
6. Sport Sciences Faculty, Castilla La Mancha University Education Faculty of Toledo, Spain
7. Sport Medicine Department, UCAM, Murcia, Spain
8. Physics, Institute of Cancer Research, Sutton, United Kingdom of Great Britain and Northern Ireland
9. Department of Obstetrics and Gynecology, Lund University, Lund, Sweden
10. Center for Fetal Care, Queen Charlotte's and Chelsea Hospital, London, United Kingdom of Great Britain and Northern Ireland
11. Department of Obstetrics and Gynecology, University of Chicago Medical Center, CHICAGO, United States
12. Safety Committee, World Federation for Ultrasound in Medicine and Biology, Chicago, United States
13. Department of Obstetrics and Gynecology, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
14. Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
15. Ultrasound and Underwater Acoustics, National Physical Laboratory, Teddington, United Kingdom of Great Britain and Northern Ireland
16. Department of Medicine and Surgery, Obstetrics and Gynecology Unit, Universita degli Studi di Parma, Italy
17. Department of Obstetrics and Gynecology, Medical University Innsbruck Department of Gynecology, Innsbruck, Austria
18. Center for Medical Physics & Biomedical Engineering, Medical University Vienna, Austria