RT Journal Article SR Electronic T1 What is the significance of an isolated elevated activated partial thromboplastin time in the preoperative setting? JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP S13 OP S15 VO 74 IS 9 esuppl 1 A1 Jaffer, Amir K. A1 Michota, Franklin A. A1 Bader, Angela M. A1 Borkowski, Raymond A1 Kroen, Collin A1 Harte, Brian A1 Gugliotti, David A1 Morris, William H. A1 Kumar, Ajay YR 2007 UL http://www.ccjm.org/content/74/9_esuppl_1/S13.abstract AB