title: Environmental epidemiology--strengths and weaknesses.
authors.affiliation: Institute of Occupational Health, University of Birmingham, UK.
authors.forename: G M
authors.initials: GM
authors.lastname: Paddle
authors.forename: J M
authors.initials: JM
authors.lastname: Harrington
mesh_terms: D015982:Bias; D016000:Cluster Analysis; D015331:Cohort Studies; D015986:Confounding Factors, Epidemiologic; D003430:Cross-Sectional Studies; D004781:Environmental Exposure; D004787:Environmental Pollution; D004812:Epidemiologic Methods; D006801:Humans