Institution: | 1. Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal;2. Department of Obstetrics and Gynaecology, Hospital de São Marcos, Braga, Portugal;3. Department of Obstetrics and Gynaecology, Centro Hospitalar do Alto Ave, Guimarães, Portugal;4. Department of Obstetrics and Gynecology, Faculty of Medicine, Hospital of S. João, Porto, Portugal |