Chaiklieng, S. ., K. . Khanaphan, and P. . Suggaravetsiri. “Prevalence of Work-Related Back Pain and Work Environmental Ergonomics Among Rubber Plant Farmers in Nam Yuen District, Ubon Ratchatani Province”. UBRU Journal for Public Health Research, vol. 10, no. 1, June 2021, pp. 101-1, https://he02.tci-thaijo.org/index.php/ubruphjou/article/view/243551.