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BILBAO, SPAIN - APRIL 21: Queen Letizia of Spain poses as she attends a congress on rare diseases on April 21, 2016 in Bilbao, Spain. (Photo by Gari Garaialde/Getty Images)

BILBAO, SPAIN - APRIL 21:  Queen Letizia of Spain poses as she attends a congress on rare diseases on April 21, 2016 in Bilbao, Spain.  (Photo by Gari Garaialde/Getty Images)