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Safitri Y, Nursia LE, Rimonda R, Fitriani F, Wintah W. EFFECTIVENESS OF EDUCATIONAL VIDEO AND LEAFLET ON IMPROVING MOTHERS’ KNOWLEDGE ABOUT THE IMPACT OF CIGARETTE SMOKE AND PNEUMONIA PREVENTION IN TODDLERS IN THE WORKING AREA OF UPTD PUSKESMAS JOHAN PAHLAWAN. Hearty [Internet]. 2026 Jun. 1 [cited 2026 Jun. 6];14(3):658-6. Available from: http://150.107.142.43/index.php/Hearty/article/view/22350