RT Journal Article SR Electronic T1 Deep venous thrombosis: low-molecular-weight heparins in perioperative prophylaxis JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 368 OP 369 VO 62 IS 6 A2 William S. Wilke A1 Geno Merli YR 1995 UL http://www.ccjm.org/content/62/6/368.abstract AB