Subcutaneous low-molecular weight heparin or oral anticoagulants for the prevention of deep-vein thrombosis in elective hip and knee replacement? Fraxiparine Oral Anticoagulant Study Group - Hamulyak,K.; Lensing,A.W.; vanDer,M.J.; Smid,W.M.; vanOoy,A.; Hoek,J.A. (Thromb Haemost, 1995)