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

### Input Text: Indeed , the incidence of liver transplantation and death in this group was 11 . 7 % if patients had jaundice at presentation , whereas the corresponding figure was 3 . 8 % in nonjaundiced patients ( P < . 04 ) .
### Output Text:
Indeed , the incidence of liver transplantation and death in this group was 11 . 7 % if patients had jaundice at presentation , whereas the corresponding figure was 3 . 8 % in nonjaundiced patients ( P < . 04 ) . 