TY - JOUR T1 - A new approach to the measurement of heart rate in patients with chronic heart failure-Heart rate performance index: an observational study AU - Akyüz, Aydın AU - Alpsoy, Şeref AU - Çayan Akkoyun, Dursun AU - Güler, Niyazi Y1 - 2013 PY - 2013 DA - 2013 N1 - doi: 10.5152/akd.2013.066 DO - 10.5152/akd.2013.066 T2 - The Anatolian Journal of Cardiology JF - The Anatolian Journal of Cardiology JO - Anatol J Cardiol SP - 215 EP - 220 VL - 13 IS - 3 SN - M3 - PMID: 23376649 UR - https://dx.doi.org/10.5152/akd.2013.066 Y2 - 2013 ER -