A real-life study of the effectiveness of different pharmacological approaches to the treatment of smoking cessation: re-discussing the predictors of success - Prado, Gustavo Faibischew; Lombardi, Elisa Maria Siqueira; Bussacos, Marco Antônio; Arrabal-Fernandes, Frederico Leon; Terra-Filho, Mário; Santos, Ubiratan de Paula (Clinics, 2011)