%0 Journal Article %T Speckle-tracking strain assessment of left ventricular dysfunction in synthetic cannabinoid and heroin users %A Demirkıran, A. %A Albayrak, N. %A Albayrak, Y. %A Zorkun, C.S. %J The Anatolian Journal of Cardiology %D 2018 %V 19 %P 388-393 %R 10.14744/AnatolJCardiol.2018.76429