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RYAZAN, RUSSIA - JANUARY 31, 2017: Russia's oldest working surgeon Alla Ilyinichna Levushkina ,89, in an operating room at Ryzan City Hospital No 11. She performs at least four surgeries per week. On May 5, 2017, Alla Levushkina is to turn 90. Alexander Ryumin/TASS (Photo by Alexander Ryumin\TASS via Getty Images)

RYAZAN, RUSSIA - JANUARY 31, 2017: Russia's oldest working surgeon Alla Ilyinichna Levushkina ,89, in an operating room at Ryzan City Hospital No 11. She performs at least four surgeries per week. On May 5, 2017, Alla Levushkina is to turn 90.  Alexander Ryumin/TASS (Photo by Alexander Ryumin\TASS via Getty Images)