1. Department of Preventive Medicine and Public Health, Food Sciences, Toxicology, and Legal Medicine, University of Valencia, Burjassot, Spain
2. Institut Hospital del Mar d’Investigacions Mèdiques (IMIM), Barcelona, Spain
3. CIBER de Epidemiologìa y Salud Pública (CIBERESP), Madrid, Spain
4. Department of Statistics and Operations Research, University of Valencia, Burjassot, Spain