"First lady Michelle Obama poses for photos after reading ""Twas the Night Before Christmas"" to a group of children at the Children's National Health System in Washington, Monday, Dec. 14, 2015. Her appearance continued a first lady tradition that dates back more than 60 years to Bess Truman, who first brought holiday cheer to children not well enough to leave the hospital in time for Christmas. (AP Photo/Susan Walsh)"
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