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: Our data support the hypothesis that ALD is a frequent cause of idiopathic Addisons disease in children and adults . .
### Output Text:
Our data support the hypothesis that <span class="disease">ALD</span> is a frequent cause of idiopathic <span class="disease">Addisons disease</span> in children and adults . . 