Khusainova Munira Alisherovna, G’aniyev Akbar Abdirasulovich, Ziyotov Maqsud Baxtiyorovich and Narzullayev Javohir Anvarovich 2022. TO ASSESS THE CONDITION OF THE MYOCARDIUM IN PATIENTS CHRONIC HEART FAILURE ON THE BACKGROUND OF RHEUMATOID ARTHRITIS. Spectrum Journal of Innovation, Reforms and Development. 4, (Jun. 2022), 210–215.