1. Faculty of Nursing, Physiotherapy and Podiatry, University of Seville, 41009 Seville, Spain
2. Faculty of Health Sciences, University of Granada, 18071 Granada, Spain
3. Institute of Biomedicine of Seville (IBiS), 41013 Seville, Spain
4. Midwifery Training Unit, Department of Materno-Fetal Medicine, Genetics and Reproduction, Hospital Universitario Virgen del Rocío, 41013 Seville, Spain