Supapvanich, Chompunuch, Aresow Musow, and Anchalee Pongkasert. 2019. “Prevalence of Low Back Pain in Informal Sectors at a Port Harbor in Pattani Province”. Princess of Naradhiwas University Journal 11 (3):55-68. https://li01.tci-thaijo.org/index.php/pnujr/article/view/160534.