1. Department of General and Specialized Nursing; University of São Paulo at Ribeirão Preto; Ribeirão Preto Brazil
2. Preventive Medicine and Public Health Area; University of Alicante; Alicante Spain
3. Faculty of Dentistry; University of Antioquia; Medellin Colombia
4. Center for Research in Occupational Health; Pompeu Fabra University; Barcelona Spain
5. CIBER of Epidemiology and Public Health; Barcelona Spain