For citations:
Vasichkina E.S., Alekseeva D.Yu., Gorozhankina E.Yu., Kresteleva A.S., Kofeynikova O.A., Pervunina T.M. New protocol for diagnosing exercise-induced arrhythmias and conduction disturbances in early and preschool age children. Russian Journal of Cardiology. 2022;27(7):5107. (In Russ.) https://doi.org/10.15829/1560-4071-2022-5107