Affiliation: | aDepartment of Obstetrics and Gynecology, Linköping University Hospital, S-581 85 Linköping, Sweden bClinical Research Center, Örebro University Hospital, S-701 85 Örebro, Sweden cDepartment of Pediatrics, Örebro University Hospital, S-701 85 Örebro, Sweden dCentre for Assessment of Medical Technology, S-701 85 Örebro, Sweden |