Puntumetakul, Rungthip, Rungthip Chalermsan, Chalermwut Sri-onla, Petcharat Keawduangdee, and Uraiwon Chatchawan. 2015. “Prevalence and Associated Behavioral Factors of Low Back Pain in High School Students: Case Study in Kaennakhon Wittayalay School”. Archives of Allied Health Sciences 26 (3). Khon Kaen, Thailand:304-12. https://he01.tci-thaijo.org/index.php/ams/article/view/66364.