title: A hard natural experiment to fathom: a testament to the increasing difficulty of conducting reliable surveys?
authors.affiliation: Centre for Addictions Research of BC, University of Victoria, BC, Canada. timstock@uvic.ca
authors.forename: Tim
authors.initials: T
authors.lastname: Stockwell
mesh_terms: D000428:Alcohol Drinking / Q000191:economics / Q000453:epidemiology / Q000639:trends*; D015331:Cohort Studies; D003625:Data Collection / Q000379:methods / Q000592:standards*; D005387:Finland / Q000453:epidemiology; D006801:Humans; D012537:Scandinavian and Nordic Countries / Q000453:epidemiology