Polymorphisms of the human platelet antigens HPA-1, HPA-2, HPA-3, and HPA-5 on the platelet receptors for fibrinogen (GPIIb/IIIa), von Wille-brand factor (GPIb/IX), and collagen (GPIa/IIa) are not correlated with an increased risk for stroke - Carlsson, LE; Greinacher, A; Spitzer, C; Walther, R; Kessler, C (Stroke, 1997)