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Americans don't sleep enough, and it's costing us $411 billionDelaware Online
www.delawareonline.com
— Marco Hafner & Wendy M. Troxel. Myriad business executives and heads of state have said they get by on little to no sleep. › opinion ›
Op-Ed: If teenagers get more sleep, California could gain billions
www.latimes.com
— Op-Ed: If teenagers get more sleep, California could gain billions. By Wendy M. Troxel and Marco Hafner. Sept. 7, AM PT. › op-ed
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