RESPIRATION RATES AND HEART RATE VARIABILITY IN HEALTHY VOLUNTEERS IN BIOFEEDBACK CONNECTION. J. V. N. Karazin Khark. Nat. Univ., Ser. Med. [Internet]. 2015 Jul. 4 [cited 2026 Oct. 26];(18):20-5. Available from: https://periodicals.karazin.ua/medicine/article/view/6951