Kamenshchyk, A.V., Borisenko, T.B., Antishina, T.F. and Rudova, E.I. 2015. Calcineurin as a marker of myocardial hypertrophy in children with valvular congenital heart diseases. Zaporozhye Medical Journal. 17, 3 (Jun. 2015). DOI:https://doi.org/10.14739/2310-1210.2015.3.44446.