For citations:
Son I.M., Ivanova M.A., Sokolovskaya T.A., Vankov D.V., Ogrizko E.V., Zimina E.V. Pediatric cardiologists’ sufficiency and their activities in Russian Federation, 2013-2017. Russian Journal of Cardiology. 2019;(1):103-112. (In Russ.) https://doi.org/10.15829/1560-4071-2019-1-103-112