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MADRID, SPAIN - NOVEMBER 20: Queen Letizia of Spain visits the Molecular Biology Center 'Severo Ochoa' at the Autonoma University on November 20, 2015 in Madrid, Spain. (Photo by Carlos Alvarez/Getty Images)

MADRID, SPAIN - NOVEMBER 20:  Queen Letizia of Spain visits the Molecular Biology Center 'Severo Ochoa' at the Autonoma University on November 20, 2015 in Madrid, Spain.  (Photo by Carlos Alvarez/Getty Images)