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: Of the 407 Yellow Card records analysed , 106 satisfied criteria for TDF - related kidney disease , of which 53 ( 50 % ) had features of kidney tubular dysfunction , 35 ( 33 % ) were found to have features of glomerular dysfunction and 18 ( 17 % ) had Fanconi syndrome .
### Output Text:
Of the 407 Yellow Card records analysed , 106 satisfied criteria for <span class="chemical">TDF</span> - related kidney disease , of which 53 ( 50 % ) had features of kidney tubular dysfunction , 35 ( 33 % ) were found to have features of glomerular dysfunction and 18 ( 17 % ) had Fanconi syndrome . 