[Perception over smoke-free policies amongst bar and restaurant representatives in central Mexico].
Barrientos-Guti?rrez T, Gimeno D, Thrasher JF, Reynales-Shigematsu LM, Amick BC, Lazcano-Ponce E, Hern?ndez-?vila M. [Perception over smoke-free policies amongst bar and restaurant representatives in central Mexico]. Salud Publica Mex. 2010; 52 Suppl 2:S149-56.