Deephai N, Schmidt B, Laprattanathong P. Factors Affecting Physical Activity Behavior Among the Elderly in Chiang Mai Province, Thailand. IJSASR [Internet]. 2026 Feb. 4 [cited 2026 Nov. 12];6(2):143-60. Available from: https://so07.tci-thaijo.org/index.php/IJSASR/article/view/8079