EFFICACY OF IVABRADIN IN COMBINED TREATMENT OF PATIENTS WITH POSTINFARCTION SYSTOLIC CHRONIC CARDIAC FAILURE Article Potapenko A.V., Abdulazizov O.Sh., Dyachuk L.I., Kiyakbaev G.K., Kobalava Zh.D., Moiseev V.S. Terapevticheskii Arkhiv. Vol. 83. 2011. P. 19-26