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: RESULTS : The literature evaluation suggested that NSAIDs induce ventricular septal defects ( VSDs ) and midline defects ( MDs ) in rats and diaphragmatic hernia ( DH ) , MDs , and VSDs in rabbits ( Cook JC et al . , 2003 ) ; hence , the present study focused on these malformations , even though ASA induces several other low - incidence malformations .
### Output Text:
RESULTS : The literature evaluation suggested that NSAIDs induce ventricular septal defects ( VSDs ) and midline defects ( MDs ) in rats and diaphragmatic hernia ( DH ) , MDs , and VSDs in rabbits ( Cook JC et al . , 2003 ) ; hence , the present study focused on these malformations , even though <span class="chemical">ASA</span> induces several other low - incidence malformations . 