The role of von Willebrand factor and fibrinogen in platelet aggregation under varying shear stress. - Ikeda, Y; Handa, M; Kawano, K; Kamata, T; Murata, M; Arai, Y; Anbo, H; Kawai, Y; Watanabe, K; Iragaki, I; Sakai, K; Ruggeri, ZM (J Clin Invest, 1991)