1. Department of Medicine University of Oviedo OviedoSpain
2. Health Research Institute of Asturias (ISPA) Oviedo Principado de AsturiasSpain
3. Nursing School of Vitoria/Gasteiz University of the Basque Country VitoriaSpain
4. Carmen and Severo Ochoa Hospital Cangas del NarceaSpain
5. Central University Hospital of Asturias OviedoSpain