Dwianingsih, E. K., Y. M. Sakti, R. Magetsari, D. Y. P. Hutahaean, G. P. Sakadewa, P. D. Lasmana, N. C. Budhiparama, and E. K. Dwianingsih. “Correlation of Tumor Necrosis Factor-α Expression With Pain Level in Degenerative Lumbar Canal Stenosis Patients”. Open Access Macedonian Journal of Medical Sciences, vol. 9, no. B, Sept. 2021, pp. 1135-9, doi:10.3889/oamjms.2021.6708.