Haryani W, Siregar IH. Pop-up book as a media for dental promotion to increase knowledge of dental health in elementary school students. J. Drug Delivery Ther. [Internet]. 2022 Jan. 15 [cited 2026 Jan. 21];12(1):42-4. Available from: https://jddtonline.info/index.php/jddt/article/view/5279