CLINICAL EXPERIENCE IN USING COMBINED FERROTHERAPY WITH L-CARNITINE IN STANDARD TREATMENT OF PATIENTS WITH CHRONIC HEART FAILURE WITH REDUCED LEFT VENTRICLE EJECTION FRACTION WITH CONCOMITANT IRON DEFICIENCY ANEMIA. RS Global - World Science 2019, 1 (10(50), 37-40. https://doi.org/10.31435/rsglobal_ws/31102019/6718.