Affiliation: | 1. Center for Research in Health Technologies and Information Systems (CINTESIS), Faculty of Medicine, University of Porto, Porto, Portugal;2. Department of Obstetrics and Gynecology, Faculty of Medicine, University of Porto, Porto, Portugal;3. Department of Obstetrics and Gynecology, S?o Jo?o Hospital, Porto, Portugal;4. INEB — Institute of Biomedical Engineering, Porto, Portugal |