TY - JOUR TI - Speckle-tracking strain assessment of left ventricular dysfunction in synthetic cannabinoid and heroin users AU - Demirkıran, A. AU - Albayrak, N. AU - Albayrak, Y. AU - Zorkun, C.S. JO - The Anatolian Journal of Cardiology PY - 2018 VL - 19 SP - 388 EP - 393 DO - 10.14744/AnatolJCardiol.2018.76429 ER -