UniversitatsSpital Zurich, Zurich, Switzerland
VL-Medi Clinical Research Center, Helsinki, Finland
Szegedi Tudományegyetem (SZTE), Szeged, Hungary
Azienda Ospedaliero - Universitaria di Modena Policlinico, Modena, Italy
Sexual Health Clinic of the Estonian Sexual Health Association, Tallinn, Estonia
Fertility and Sterility Research Center, Warsaw, Warsaw, Poland
Clinica Euskalduna, Bilbao, Spain
Hospital Universitario Araba, Vitoria-Gasteiz, Spain
Infanta Sofía University Hospital, Madrid, Spain
j Nurse Specialist in Contraception, Bournemouth, United Kingdom
Zuyderland Medical Centre, Sittard, Netherlands
Hôpital Saint-Louis, Paris, France
Northwestern University Feinberg School of Medicine, Chicago, United States
Københavns Universitet, Copenhagen, Denmark
Universitätsspital Basel, Basel, Switzerland