RT Journal Article SR Electronic T1 Does elevated blood pressure at the time of surgery increase perioperative cardiac risk? JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP S5 OP S6 VO 73 IS 9 esuppl 1 A1 Kroen, Collin YR 2006 UL http://www.ccjm.org/content/73/9_esuppl_1/S5.abstract AB