INVESTIGATION OF PLATELET FUNCTION AND THROMBIN ACTIVATED FIBRINOLYSIS INHIBITOR IN CHILDREN WITH CONGENITAL HEART DEFECTS Article Lastovka V, Gordeeva O.B., Lavretsky D, Tepaev R., Bidzhiev A, Abramyan M, Chagirev V, Lezhnev A, Yaprintsev V, Bedin A, Shamrin Y Clinical Chemistry and Laboratory Medicine. Vol. 59. 2021. P. S540-S540