Atorvastatin reduces the ability of clopidogrel to inhibit platelet aggregation: A new drug-drug interaction. - Lau,W.C.; Waskell,L.A.; Watkins,P.B.; Neer,C.J.; Horowitz,K.; Hopp,A.S.; Tait,A.R.; Carville,D.G.; Guyer,K.E.; Bates,E.R. (Circulation, 2003)