Identification of a point mutation in type IIB von Willebrand disease illustrating the regulation of von Willebrand factor affinity for the platelet membrane glycoprotein Ib-IX receptor - Ware, J; Dent, JA; Azuma, H; Sugimoto, M; Kyrle, PA; Yoshioka, A; Ruggeri, ZM (Proc Natl Acad Sci USA, 1991)