Epitope mapping of the von Willebrand factor subunit distinguishes fragments present in normal and type IIA von Willebrand disease from those generated by plasmin - Berkowitz, S D; Dent, J; Roberts, J; Fujimura, Y; Plow, E F; Titani, K; Ruggeri, Z M; Zimmerman, T S (J Clin Invest, 1987)