Irvan, I., E. Elson, J. C. P. Butarbutar, J. F. L. Tobing, M. A. Lim, and R. Pranata. “Oblique Versus Transforaminal Lumbar Interbody Fusion in Degenerative Spondylolisthesis: A Systematic Review and Meta-Analysis”. Open Access Macedonian Journal of Medical Sciences, vol. 10, no. F, Apr. 2022, pp. 297-04, doi:10.3889/oamjms.2022.9440.