Sera from patients with heparin induced thrombocytopenia generate platelet-derived microparticles with procoagulant activity: an explanation for the thrombotic complications of heparin-induced thrombocytopenia. - Warkentin, TE; Hayward, CPM; Boshkov, LK; Santos, AV; Sheppard, J-A; Bode, AP; Kelton, JG (Blood, 1994)