For citations:

VEYLER R.V. COMBINED ANESTHESIA BY SEVOFLURANE AND FENTANYL IN ELDERLY PATIENTS WITH DIFFERENT REACTIVITY OF THE CARDIOVASCULAR AND RESPIRATORY SYSTEMS. Kuban Scientific Medical Bulletin. 2018;25(1):54-61. (In Russ.) https://doi.org/10.25207/1608-6228-2018-25-1-54-61