title: Monitoring vendor compliance with tobacco sales laws: payment vs no payment approaches.
authors.forename: K M
authors.initials: KM
authors.lastname: Cummings
authors.forename: T
authors.initials: T
authors.lastname: Saunders-Martin
authors.forename: H
authors.initials: H
authors.lastname: Clarke
authors.forename: J
authors.initials: J
authors.lastname: Perla
mesh_terms: D000293:Adolescent; D000367:Age Factors; D003132:Commerce / Q000331:legislation & jurisprudence*; D003415:Crime; D006801:Humans; D009518:New York; D012907:Smoking / Q000331:legislation & jurisprudence*