The value of three-dimensional color Doppler trans-esophageal echocardiography in predicting the number of MitraClip devices needed during the procedure. - Mahmoud HM; Al-Ameen AM; Hassan MH; Badr T; Nieem H; Shaheen AA; Ghabashi AE (The Egyptian heart journal : (EHJ) : official bulletin of the Egyptian Society of Cardiology, 2017)