AU - Akyüz, Aydın AU - Alpsoy, Şeref AU - Çayan Akkoyun, Dursun AU - Güler, Niyazi TI - A new approach to the measurement of heart rate in patients with chronic heart failure-Heart rate performance index: an observational study PT - Journal Article DP - 2013 TA - Anatol J Cardiol PG - 215-220 VI - 13 IP - 3 AID - 10.5152/akd.2013.066 [doi] PMID - 23376649 4100 - https://dx.doi.org/10.5152/akd.2013.066 SO - The Anatolian Journal of Cardiology, 2013 13(3):215