Batzorig, E., T. Janchiv, K. Janchiv, and O. Baldorj. “Distribution of TNF-α -308 G/A Polymorphism Among Pediatric Patients With Pneumonia in Ulaanbaatar”. Proceedings of the Mongolian Academy of Sciences, vol. 61, no. 04, Dec. 2021, pp. 23-28, doi:10.5564/pmas.v61i04.1929.