Pandu Dwipatmasari, and Irfan Hamdani. “The Relationship Between Backpack Use and Low Back Pain Complaints in Grade VIII Students of Muhammadiyah 1 Middle School, Medan”. Educare: Journal Educational and Multimedia 4, no. 02 (September 10, 2026): 132–140. Accessed September 15, 2026. https://seaninstitute.or.id/bersinar/index.php/ducare/article/view/274.