title: A Non-randomized trial.
authors.forename: Nasser M
authors.initials: NM
authors.lastname: Gayed
mesh_terms: D004504:Education, Medical, Undergraduate; D004813:Epidemiology / Q000193:education*; D006801:Humans; D018794:Problem-Based Learning; D016032:Randomized Controlled Trials as Topic; D012107:Research Design; D013663:Teaching