“ANGINA PECTORIS AND MYOCARDIAL ISCHEMIA IN THE ABSENCE OF OBSTRUCTIVE CORONARY ARTERY DISEASE: CLINICAL CASE”, J. V. N. Karazin Khark. Nat. Univ., Ser. Med., no. 36, pp. 58–62, Jan. 2019, doi: 10.26565/2313-6693-2018-36-09.