1. Faculty of Nursing, Physiotherapy and Podiatry, University of Seville, 41009 Seville, Spain
2. Institute of Biomedicine of Seville (IBiS/CSIC), 41013 Seville, Spain
3. Department of Sociology, Faculty of Social Sciences and Humanities (NOVA FCSH), Interdisciplinary Centre of Social Sciences (CICS.NOVA), Nova University Lisbon (NOVA), 1069-061 Lisbon, Portugal
4. Midwifery Training Unit, Department of Materno-Fetal Medicine, Genetics and Reproduction, Hospital Universitario Virgen del Rocío, 41013 Seville, Spain
5. Faculty of Medicine-Biostatistics Unit, University of Granada, 18016 Granada, Spain