A monomeric von Willebrand factor fragment, Leu 504-Ser 728, inhibits von Willebrand factor interaction with glycoprotein Ib-IX - Gralnick, H R; Williams, S; McKeown, L; Kramer, W; Krutzsch, H; Górecki, M; Pinet, A; Garfinkel, L I (Proc Natl Acad Sci, 1992)