1. The Canary Islands Health Service, Tenerife, 38071 Canary Islands, Spain
2. Nuestra Señora de la Candelaria School of Nursing, University of La Laguna, 38010 Canary Islands, Spain
3. Department of Education, Vocational Training, Physical Activity and Sport, Regional Government of the Canary Islands, Tenerife, 38010 Canary Islands, Spain