1.
Rivaroxaban versus enoxaparin for thromboprophylaxis after total knee arthroplasty (RECORD4): a randomised trial
by Turpie, Alexander GG, MD
The Lancet (British edition), 2009, Vol.373 (9676), p.1673-1680

2.
Once-daily atazanavir/ritonavir versus twice-daily lopinavir/ritonavir, each in combination with tenofovir and emtricitabine, for management of antiretroviral-naive HIV-1-infected...
by Molina, Jean-Michel, Prof
The Lancet (British edition), 2008, Vol.372 (9639), p.646-655
