MARÍN, Heriberto A.; DÍAZ-TORO, Elba C. Reduced Exposure to Secondhand Smoke at Casinos in Puerto Rico after the Implementation of a Workplace Smoking Ban in 2007: a Pre-Post Design. Puerto Rico Health Sciences Journal, [S. l.], v. 30, n. 4, 2011. Disponível em: https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/604. Acesso em: 5 nov. 2025.