In the sentence extracted from biomedical literature, identify all the disease entities. The required answer format is the same sentence with HTML <span> tags to mark up specific entities. 
### Entity Markup Guides:
Use <span class="disease"> to denote a disease.

### Input Text: The same heterozygous T - > C transition at nt 8567 of the von Willebrand factor ( vWF ) transcript was found in two unrelated patients with type IID von Willebrand disease , with no other apparent abnormality .
### Output Text:
The same heterozygous T - > C transition at nt 8567 of the <span class="disease">von Willebrand</span> factor ( vWF ) transcript was found in two unrelated patients with <span class="disease">type IID von Willebrand disease</span> , with no other apparent abnormality . 