title: Causal inference: the case of hygiene and health.
authors.affiliation: Joseph Mailman School of Public Health, Columbia University, New York, NY 10032, USA.
authors.forename: Allison E
authors.initials: AE
authors.lastname: Aiello
authors.forename: Elaine L
authors.initials: EL
authors.lastname: Larson
mesh_terms: D015982:Bias; D015984:Causality; D015986:Confounding Factors, Epidemiologic; D004812:Epidemiologic Methods; D006235:Hand Disinfection; D006262:Health; D006801:Humans; D006920:Hygiene; D012307:Risk Factors