PFA-100 monitoring of von Willebrand factor (VWF) responses to desmopressin (DDAVP) and factor VIII/VWF concentrate substitution in von Willebrand disease type 1 and 2 - Van Vliet, HHDM; Kappers-Klunne, MC; Leebeek, FWG; Michiels, JJ (Thromb Haemost, 2008)