1. Tymoshenko O.S., Yabluchansky M.I., Bilchenko O.V. THE FREQUENCY OF USE OF COMBINATIONS OF ANTIHYPERTENSIVE DRUGS IN PATIENTS WITH DIFFICULT-TO-CONTROL HYPERTENSION ON THE BACKGROUND OF BIOFEEDBACK AND PACED BREATHING AND HEART RATE VARIABILITY // The Journal of V. N. Karazin Kharkiv National University, series "Medicine". 2018. № 35.