Dr Yokubjon Kurbanov. “INDICATORS OF FREQUENCY OF MTHFR GENE RS 1801131 1298 A>C POLYMORPHISM IN COVID-19”. International Journal of Medical Science and Public Health Research, vol. 4, no. 09, Sept. 2023, pp. 42-47, https://ijmsphr.com/index.php/ijmsphr/article/view/67.