Namking, M., M. Buranaurgsa, P. Jeeravipoolvarn, and M. Deesart. “The Prevalence of Vertebral Osteophyte Formation in Northeast Thais”. Srinagarind Medical Journal, vol. 23, no. 1, Nov. 2013, pp. 81-92, https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/13056.