THE IMPORTANCE OF THE COMPLIANCE TO A MEDICAL TREATMENT OF A PATIENT WITH A VERY HIGH CARDIOVASCULAR RISK AND COMORBIDITY: ARTERIAL HYPERTENSION, ATRIAL FIBRILLATION AND DIABETES MELLITUS. J. V. N. Karazin Khark. Nat. Univ., Ser. Med. 2017;(32):79-83. doi:10.26565/2227-6505-2016-32-13