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Continue to ChatISU researcher finds smartphone link to 'abrupt shift' in teen sleep https://www.radioiowa.com/2017/10/19/isu-researcher-finds-smartphone-link-to-abrupt-shift-in-teen-sleep/
ISU researcher finds smartphone link to 'abrupt shift' in teen sleep https://www.radioiowa.com/2017/10/19/isu-researcher-finds-smartphone-link-to-abrupt-shift-in-teen-sleep/