Valeryevna, S. L., K. G. Mukhtorovna, and E. S. Kobylovna. “Premature Birth In A Modern Aspect”. International Journal of Bio-Science and Bio-Technology, Vol. 11, no. 10, Oct. 2019, pp. 31-37, https://journals.edupub.org/index.php/ijbsbt/article/view/9178.