TY - JOUR TI - Two-dimensional speckle tracking echocardiography derived post systolic shortening in patients with unstable angina and normal left ventricular systolic function AU - Giridharan, S. AU - Karthikeyan, S. AU - Aashish, A. AU - Amirtha Ganesh, B. AU - Arun Prasath, P. AU - Usha, P. JO - The Anatolian Journal of Cardiology PY - 2021 VL - 25 SP - 880 EP - 886 DO - 10.5152/AnatolJCardiol.2021.40931 ER -