Institution: | 1. Centre for Infectious Disease Control (CIb), National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands;2. Department of Public and Occupational Health, EMGO Institute, VU University Medical Center, Amsterdam, The Netherlands;3. Department of Epidemiology, University Medical Center Groningen, HanzepleinGroningen, The Netherlands
Department of Obstetrics and Gynecology, University Medical Center Groningen, Hanzeplein, Groningen, The Netherlands;4. Department of Obstetrics and Gynecology, University Medical Center Groningen, Hanzeplein, Groningen, The Netherlands |