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: In a study of G6PD deficient patients who presented with clinical favism in Spain , we have found a new polymorphic variant that we have called G6PD Malaga , whose only abnormality is a 542 A - - > T ( 181 Asp - - > Val ) mutation .
### Output Text:
In a study of <span class="disease">G6PD deficient</span> patients who presented with clinical <span class="disease">favism</span> in Spain , we have found a new polymorphic variant that we have called G6PD Malaga , whose only abnormality is a 542 A - - > T ( 181 Asp - - > Val ) mutation . 