title: Research conducted using data obtained through online communities: ethical implications of methodological limitations.
authors.affiliation: Department of Epidemiology, Erasmus University Medical Center Rotterdam, The Netherlands. a.janssens@erasmusmc.nl
authors.forename: A Cecile J W
authors.initials: AC
authors.lastname: Janssens
authors.forename: Peter
authors.initials: P
authors.lastname: Kraft
mesh_terms: D035843:Biomedical Research / Q000941:ethics* / Q000379:methods*; D003625:Data Collection / Q000941:ethics / Q000379:methods; D006801:Humans; D007258:Informed Consent; D020407:Internet