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The Christmas tree (R) and the nativity scene (C) are pictured at the Saint Peter's square following the illumination ceremony on December 9, 2016 in Vatican. This year, the Christmas ornaments were made by children of the paediatric oncology departments of Italian hospitals. / AFP / VINCENZO PINTO (Photo credit should read VINCENZO PINTO/AFP via Getty Images)

The Christmas tree (R) and the nativity scene (C) are pictured at the Saint Peter's square following the illumination ceremony on December 9, 2016 in Vatican.
This year, the Christmas ornaments were made by children of the paediatric oncology departments of Italian hospitals. / AFP / VINCENZO PINTO        (Photo credit should read VINCENZO PINTO/AFP via Getty Images)