von Willebrand Disease, Type 1

**Definition:** A subtype of von Willebrand disease that results from a partial deficiency of VON WILLEBRAND FACTOR.

**Tree numbers:** - C15.378.100.100.900.100 - C15.378.100.141.900.100 - C15.378.463.920.100 - C16.320.099.920.100

**Synonyms:** - Type 1 von Willebrand Disease - Type I von Willebrand Disease - von Willebrand Disease, Type I