FACTORS ASSOCIATED WITH PHYSICAL ACTIVITY AMONG GRADE 4-6 STUDENTS IN NORTHERN THAILAND: Archin Songthap1, Pramote Wongsawat1, Phong-ek Suksai2, Wanitcha Kanthasorn3and Pattama Suphunnakul1. SEATROPH. 2020;50(5):976-983. Accessed May 6, 2026. https://journal.seameotropmednetwork.org/index.php/jtropmed/article/view/91