Effectiveness of a stepped primary care smoking cessation intervention (ISTAPS study): design of a cluster randomised trial

Por Cabezas, Carmen, Martin, Carlos, Granollers, Silvia, Morera, Concepció, Ballve, Josep Lluis, Zarza, Elvira, Blade, Jordi, Borras, Margarida, Serra, Antoni, Puente, Diana
Publicado em 2009