Key points are not available for this paper at this time.
In 1958, E.C. Heyde noted an association between aortic-valve stenosis and GI bleeding, which led to identification of the mechanism of the bleeding: fragmentation of high-molecular-weight multimers of von Willebrand factor on the stenotic valve led to acquired von Willebrand's disease.
Joseph Loscalzo (Wed,) studied this question.