title: Invited commentary: symposium on community intervention trials.
authors.affiliation: Department of Epidemiology, University of Washington, Seattle 98195, USA.
authors.forename: T D
authors.initials: TD
authors.lastname: Koepsell
authors.forename: P H
authors.initials: PH
authors.lastname: Diehr
authors.forename: A
authors.initials: A
authors.lastname: Cheadle
authors.forename: A
authors.initials: A
authors.lastname: Kristal
mesh_terms: D015331:Cohort Studies; D003430:Cross-Sectional Studies; D006293:Health Promotion; D006801:Humans; D016555:Matched-Pair Analysis; D016032:Randomized Controlled Trials as Topic / Q000379:methods*; D012107:Research Design