Lassen MR, Raskob GE, Gallus A, Pineo G, Chen D, Hornick P, & Lassen MR, Gallus A,
Pineo G, Raskob G, Ansell J, Landis JR, Elliott CG, Borris LC, Samama MM, Levine M,
Bates S, Douketis JD, Ginsberg J, Hirsh J, Kearon C, Schulman S, Thomson JG,
Weitz J, Turpie AGG, and Lee A.

Objective: Apixaban after hip or knee arthroplasty versus enoxaparin:
efficacy and safety in key clinical subgroups