1. Maternity Hospital Virgen de las Nieves, 18014 Granada, Spain
2. Faculty of Health Sciences, Department of Nursing, Physiotherapy and Medicine, University of Almeria, 04120 Almeria, Spain
3. Health Research Center, University of Almería, 04120 Almería, Spain
4. Andalusian Public Foundation for Biomedical Research in Eastern Andalusia (FIBAO), University Hospital Torrecárdenas, 04009 Almería, Spain