Electrophysiologic effects of ischemic preconditioning on QT dispersion during coronary angioplasty. - Okishige,K.; Yamashita,K.; Yoshinaga,H.; Azegami,K.; Satoh,T.; Goseki,Y.; Fujii,S.; Ohira,H.; Satake,S. (J Am Coll Cardiol, 1996)