1. Department of Obstetrics and Gynecology; Kanta-Häme Central Hospital; Hämeenlinna Finland
2. Institute of Clinical Medicine; University of Eastern Finland; Kuopio Finland
3. Department of Obstetrics and Gynecology; Central Finland Central Hospital; Jyväskylä Finland
4. School of Pharmacy; University of Eastern Finland; Kuopio Finland
5. Terveystalo; Kuopio Finland
6. Central Finland Hospital District; Jyväskylä Finland
7. Faculty of Medicine and Life Sciences; University of Tampere; Tampere Finland
8. Department of Obstetrics and Gynecology; Helsinki University Hospital and Helsinki University; Helsinki Finland
9. Department of Obstetrics and Gynecology; Tampere University Hospital; Tampere Finland