Coronary artery vasospasm during catheter cryoablation of left ventricular summit nonsustained ventricular tachycardia - Santiago Rivera, MD; Maria de la Paz Ricapito, MD; Josefina Parodi, MD; Pablo Spaletra; Gaston Albina, MD; Alberto Giniger, MD; Fernando Scazzuso, MD (HeartRhythm Case Reports, 2016)