[1] Univ Granada, San Cecilio Univ Hosp, Lab Med Invest, E-18071 Granada, Spain
[2] Univ Granada, Dept Paediat, E-18071 Granada, Spain
[3] Valencian Sch Hlth Studies EVES, Conselleria Sanitat, Valencia 46017, Spain
[4] CIBER Epidemiol & Salud Publ CIBERESP, Sao Paulo, Brazil
[5] Publ Hlth Lab, Bilbao 48010, Basque Country, Spain
[6] Natl Ctr Environm Hlth, Carlos Hlth Inst 3, Madrid 20220, Spain
[7] Dept Publ Hlth Guipuzkoa, San Sebastian 20013, Basque Country, Spain