BAIZHANOVA K. T.; MUTALOVA M. A.; TURGYNBAYEVA L. I.; ISSABEKOVA M. D.; MYRZAKHAIROVA A. O.; KAPAR N. RETROSPECTIVE ANALYSIS OF CHRONIC RHEUMATIC CARDIAC DISEASES AND ITS COMPLICATIONS IN THE SOUTH KAZAKHSTAN REGION. World Science, v. 2, n. 1(5), p. 38-41, 31 Jan. 2016.