Measurement of von Willebrand factor antigen in plasma and platelets with an enzyme-linked immunosorbent assay based on two murine monoclonal antibodies - Tornai, I; Declerck, PJ; Smets, L; Arnout, J; Deckmyn, H; Caekebeke-Peerlinck, KMJ; Vermylen, J (Haemostasis, 1991)