title: Letter: Relation of von Willebrand factor to bleeding time.
mesh_terms: D000328:Adult; D001777:Blood Coagulation; D001780:Blood Coagulation Tests; D005169:Factor VIII; D006487:Hemostasis; D006801:Humans; D010973:Platelet Adhesiveness / Q000187:drug effects; D012310:Ristocetin / Q000494:pharmacology; D014842:von Willebrand Diseases / Q000097:blood*
chemical_list: D012310:Ristocetin; D005169:Factor VIII