For citations:

Vershinin V.V., Sergeyenko N.I., Hudyakov I.A. DYNAMICS OF HEART RATE VARIABILITY IN THE PREOPERATIVE PERIOD USING VARIOUS METHODS OF PREMEDICATION. Health and Ecology Issues. 2013;(2):61-65. (In Russ.) https://doi.org/10.51523/2708-6011.2013-10-2-11