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, SD; Dent, J; Roberts, J; Fujimura, Y; Plow, EF; Titani, K; Ruggeri, ZM; Zimmerman, TS (J Clin Invest, 1987)