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