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According to The Atlantic, a surgeon in China has already performed the surgery on a mouse and a monkey with success.
Dr. Xiaoping Ren has teamed up with Canavero for Spiridonov's procedure, which will cost between $10 million and $100 million and will use 80 surgeons.
But many are questioning the plan, calling it junk science and saying it's raising false hope, The Atlantic reported.
Canavero says the surgery could have a 90 percent or more success rate, CBS News reported.
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