Institution: | 1. Department of Obstetrics and Gynecology, Helsinki University Central Hospital, P.O. Box 140, Haartmaninkatu 2, 00029 HUS, Helsinki, Finland;2. THL, National Institute for Health and Welfare, Helsinki, Finland
Nordic School of Public Health, Gothenburg, Sweden;3. Science Center, Pirkanmaa Hospital District, Tampere, Finland
Tampere School of Public Health, University of Tampere, Tampere, Finland;4. Department of Pediatrics, Helsinki University Central Hospital, Helsinki, Finland;5. THL, National Institute for Health and Welfare, Helsinki, Finland |