Eye-opening study: Teens getting less and less sleep
Published: February 16, 2015
CHICAGO (AP) — U.S. teens are getting sleepier: Many lack even seven hours of shut-eye each night and the problem has worsened over two decades, a study found...
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United States
WASHINGTON
D.C.
Chicago
AP Medical
University of Michigan
National Medical Center
electronics
social media
Columbia University
the University of Michigan
Lindsey Tanner
psychologist
lead author
public health researcher
sleep specialist
writer
Michigan
http
smartphones

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