Damanik RK, Eva Kartika Hasibuan, Rosetty Sipayung, Goklas Royani Sitanggang, Meidar Wati Buulolo. GERAKAN PERUT HAPPY CEGAH GASTRITIS PADA SISWA DI SD NEGERI 066652 MEDAN. JAM [Internet]. 2025 Jul. 9 [cited 2026 Feb. 5];6(2):57-63. Available from: https://e-journal.sari-mutiara.ac.id/index.php/JAM/article/view/6148