Muhammad Aidil, Z A A cluster randomised controlled trial on effectiveness of carbon monoxide measurement feedback among college smoker : A study protocol. [electronic resource] - The Medical journal of Malaysia 02 2019 - 62-66 p. digital Publication Type: Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't ISSN: 0300-5283 Subjects--Topical Terms: AdolescentCarbon Monoxide--analysisFeedbackFemaleHumansMaleMotivationSingle-Blind MethodSmoking--adverse effectsSmoking Cessation--methodsStudents--psychologyUniversitiesYoung Adult