Deletion polymorphism in the angiotensin-converting enzyme gene as a thrombophilic risk factor after hip arthroplasty - Philipp, CS; Dilley, A; Saidi, P; Evatt, B; Austin, H; Zawadsky, J; Harwood, D; Ellingsen, D; Barnhart, E; Phillips, DJ; Hooper, WC (Thromb Haemost, 1998)