1. Department of Nursing, Red Cross College of Nursing, Universidad Autónoma de Madrid, Spain
2. Research Group of Humanities and Qualitative Research in Health Science of Universidad Rey Juan Carlos, Madrid, Spain
3. Research Nursing Group of Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
4. Faculty of Nursing, Universidad de Cantabria, Santander, Spain
5. Nursing Research Group, IDIVAL, Santander, Spain
6. Cantabrian Health Service, Santander, Spain