1 Department of Nursing, Faculty of Health Sciences, University of Malaga, Malaga, Spain.
2 Obstetrics and Gynecology Area, Hospital Regional Universitario de Malaga, Málaga, Spain.
3 Department of Gynaecology and Obstetrics, Ceuta University Hospital, Midwifery Teaching Unit of Ceuta, Spain, University of Granada, Ceuta, Spain.
4 Department of Sociology, Social Work and Public Health, Faculty of Labour Sciences, University of Huelva, Huelva, Spain.
5 Safety and Health Postgraduate Programme, Universidad Espíritu Santo, Guayaquil, Ecuador.
6 Department of Nursing. University of Seville, Seville, Spain.
7 Unidade Científico-Pedagógica de Enfermagem de Saúde Materna, Obstétrica e Ginecológica, UICISA: E. Escola Superior de Enfermagem de Coimbra, Coimbra, Portugal.
8 Nursing Department. Health School. University of Algarve, Faro, Portugal.
9 Health Sciences Research Unit: Nursing, Escola Superior de Enfermagem de Coimbra, Coimbra, Portugal.
10 Centro Universitario de Enfermería Cruz Roja, Sevilla, Spain.