1. Physical Education Department, Education Science Faculty, Universidad de Cádiz, Cádiz, Spain
2. Departament of Statistics and Operational Research, Universidad de Cádiz, Cádiz, Spain
3. Dermatology Departament, Puerta del Mar University Hospital, Cádiz, Spain
4. Dermatology Departament, Costa del Sol Hospital, Marbella, Málaga, Spain