Targeted disruption of cd39 /ATP diphosphohydrolase results in disordered hemostasis and thromboregulation - Enjyoji, K; Sévigny, J; Lin, Y; Frenette, PS; Christie, PD; Schulte, J Am Esch, II; Imai, M; Edelberg, JM; Rayburn, H; Lech, M; Beeler, Dl; Csizmadia, E; Wagner, DD; Robson, SC; Rosenberg, RD (Nature Med, 1999)