[1] Barcelona Inst Global Hlth ISGlobal, Barcelona, Spain
[2] London Sch Hyg & Trop Med, Dept Med Stat, London, England
[3] Univ Crete, Sch Med, Dept Social Med, Clin Prevent Med & Nutr, Iraklion, Greece
[4] Univ Jaume 1, Dept Med, Castellon De La Plana, Spain
[5] Univ Valencia, Fac Nursing & Chiropody, Valencia, Spain
[6] Spanish Consortium Res Epidemiol & Publ Hlth CIBE, Madrid, Spain
[7] Ctr Invest Biomed Red Enfermedades Infecciosas CI, Madrid, Spain
[8] Univ Pompeu Fabra, Barcelona, Spain
[9] Hosp Del Mar Med Res Inst IMIM, Barcelona, Spain