This invention is based in part upon the discovery that rapid drying of polymer hydrogels can eliminate {HEAD ~ the problem} of unacceptable levels of soluble oligomers caused by {TAIL ~ prolonged thermal treatment} 
caused by
This invention is based in part upon the discovery that rapid drying of polymer hydrogels can eliminate { HEAD ~ the problem } of unacceptable levels of soluble oligomers caused by { TAIL ~ prolonged thermal treatment }
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