M. S. FEIGHERY ;
D. G. ALTMAN ;
M. A. SHAFFER
|
1991
Dans Journal of the American Medical Association (Vol.266, n°22, December 11, 1991) Article : Périodique
Dans Journal of the American Medical Association (Vol.266, n°22, December 11, 1991) Article : Périodique
OBJECTIVE: To examine the effects of a community education and law enforcement intervention on illegal tobacco sales to minors.
DESIGN: A 2-year, before and after trial with retail stores as the unit of analysis.
SETTING: Implementation occurr[...]
Historique