The team examined results from a Norwegian study of more than nine hundred people with C.O.P.D.
VOA: special.2009.06.23
The team examined results from a Norwegian study of nine hundred fifty-four people with C.O.P.D.
VOA: special.2009.06.03
Last August,a study in the journal Sleep Medicine said children who go to bed after nine o'clock took longer to fall asleep and slept less.
VOA: special.2010.06.09
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