Objective.—To test the hypothesis that symposia on environmental tobacco smoke (ETS) are
more likely to present unbalanced data and be authored by tobacco industry—affiliated
individuals than journal articles on ETS. To compare the publication records and affiliations
of authors of symposia with the authors of scientific consensus documents on ETS. Design.—
Content analysis of articles; computerized literature searches of English-language
publications (except for one symposium) supplemented with additional sources. Participants …