Hemorrhagic symptoms and bleeding risk in obligatory carriers of type 3 von Willebrand disease in southern Iran.

The objective of the present study was to compare old and new bleeding scores in patients with type-3 von Willebrand disease (vWD), obligatory carriers and normal controls, and to compare the ability of bleeding scores vs. clinical and laboratory data to predict bleeding after surgery. We identified 15 patients from 12 families who had type 3 vWD.