Identification of a point mutation in Type IIB von Willebrand disease illustrating the regulation of von Willebrand factor affinity for the platelet GP Ib–IX receptor - Ware, J; Dent, J A; Azuma, H; Sugimoto, M; Kyrle, P A; Yoshioka, A; Ruggeri, Z M (Proc Natl Acad Sci USA, 1991)