title: [Ecological studies].
authors.affiliation: Centro Nacional de Salud Ambiental, Instituto Nacional de Salud Publica, Rancho Guadalupe s/n, 52140 Metepec, Estado de México, México. vborja@insp.mx
authors.forename: V H
authors.initials: VH
authors.lastname: Borja-Aburto
mesh_terms: D000397:Air Pollution / Q000009:adverse effects; D015984:Causality; D016009:Chi-Square Distribution; D015331:Cohort Studies; D015340:Epidemiologic Research Design; D015386:Hazardous Substances; D006801:Humans; D008137:Longitudinal Studies; D008800:Mexico; D009026:Mortality / Q000639:trends; D016012:Poisson Distribution; D012494:Sampling Studies
chemical_list: D015386:Hazardous Substances
vernacular_title: Estudios ecológicos.