Sangkham, S. ., and S. . Thongtip. “Prevalence and Risk Factors of Musculoskeletal Symptoms Among Municipal Solid Waste Workers in Phayao Province, Northern Thailand”. Archives of Allied Health Sciences, vol. 32, no. 1, Apr. 2020, pp. 110-3, https://he01.tci-thaijo.org/index.php/ams/article/view/241862.