1. Center for Health Technology and Services Research (CINTESIS), Faculty of Medicine; University of Porto; Porto Portugal
2. Department of Obstetrics and Gynecology, Faculty of Medicine; University of Porto; Porto Portugal
3. Hospital Dr Nélio Mendonça, EPE; Funchal Portugal
4. Department of Obstetrics and Gynecology; São João Hospital; Porto Portugal
5. INEB - Institute of Biomedical Engineering; I3S - Institute for Research and Innovation in Health; University of Porto; Porto Portugal
6. Hospital Pedro Hispano; Unidade Local de Saúde de Matosinhos; Senhora da Hora Portugal