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VATICAN - APRIL 16: Right: Vatican Secretary of State, cardinal Tarcisio Bertone. Pope Benedict XVI celebrates his 80th birthday at the Vatican City on April 16, 2007. Pope Benedict XVI attends a special concert performed by Germany's Stuttgart Radiophonic orchestra in honour of his 80th birthday at Paul VI hall at the Vatican. Program: Mozart, Dvorak and Gabrieli. (Photo by Eric VANDEVILLE/Gamma-Rapho via Getty Images)

VATICAN - APRIL 16:  Right: Vatican Secretary of State, cardinal Tarcisio Bertone. Pope Benedict XVI celebrates his 80th birthday at the Vatican City on April 16, 2007. Pope Benedict XVI attends a special concert performed by Germany's Stuttgart Radiophonic orchestra in honour of his 80th birthday at Paul VI hall at the Vatican. Program: Mozart, Dvorak and Gabrieli.  (Photo by Eric VANDEVILLE/Gamma-Rapho via Getty Images)