Correlation Between QTc Interval and Clinical Severity of Subarachnoid Hemorrhage Depends on the QTc Formula Used. - COLKESEN, A. YUCEL; SEN, ORHAN; GIRAY, SEMIH; ACIL, TAYFUN; OZIN, BULENT; MUDERRISOGLU, HALDUN (Pacing & Clinical Electrophysiology, 2007)