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.
A prospective social and molecular investigation of gonococcal transmission
by Ward, Helen
The Lancet (British edition), 2000, Vol.356 (9244), p.1812-1817
