1. Department of Obstetrics and Gynecology, Medical School; University of Porto; Porto Portugal
2. Institute for Research and Innovation in Health (Instituto de Investigação e Inovação em Saúde - I3S) and Institute of Biomedical Engineering (Instituto de Engenharia Biomédica - INEB); University of Porto; Portugal
3. Center for Research in Health Technologies and Information Systems (CINTESIS); Porto Medical School, University of Porto; Porto Portugal
4. Department of Obstetrics and Gynecology; S. João Hospital; Porto Portugal
5. Department of Obstetrics and Gynecology; Hospital Pedro Hispano; Matosinhos Portugal