title: Epidemiologic methods are useless: they can only give you answers.
authors.affiliation: McGill University, Montreal, Quebec, Canada. jay.kaufman@mcgill.ca
authors.forename: Jay S
authors.initials: JS
authors.lastname: Kaufman
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Hernán
mesh_terms: D004812:Epidemiologic Methods; D015340:Epidemiologic Research Design