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