Baizhanova K. T., Mutalova M. A., Turgynbayeva L. I., Issabekova M. D., Myrzakhairova A. O., and Kapar N. 2016. “RETROSPECTIVE ANALYSIS OF CHRONIC RHEUMATIC CARDIAC DISEASES AND ITS COMPLICATIONS IN THE SOUTH KAZAKHSTAN REGION”. World Science 2 (1(5), 38-41. https://rsglobal.pl/index.php/ws/article/view/574.