T. Fernández-Villa a
, A. Vazquez-Casares b, ⁎
, A. Rivero-Rodriguez c
, A. Carvajal-Ureña d
, V. Martín a, e 
a Research Group on Gene-Environment Interactions and Health (GIIGAS), Faculty of Health Sciences, Institute of Biomedicine (IBIOMED), Universidad de León, Vegazana Campus, 24071, Spain
b Department of Nursing and Physiotherapy, Faculty of Health Sciences, Universidad de León, Vegazana Campus, Campus de Vegazana, León 24071, Spain
c Gerencia de Atención primaria, SACYL, León, Spain
d Animal Health Departament, Faculty of Veterinary, Universidad de León, Vegazana Campus, León 24071, Spain
e Consortium for Biomedical Research in Epidemiology and Public Health (CIBER en Epidemiología y Salud Pública-CIBERESP), Madrid, Spain