Valery Spiridonov, a man who has volunteered to be the first person to undergo a head transplant, is assisted before a news conference in Vladimir, Russia, June 26, 2015. The 30-year-old Russian, who has a degenerative muscle condition known as Werdnig-Hoffman, wants to become the first person ever to undergo a human head transplant performed by Italian neurosurgeon Dr. Sergio Canavero who says he believes he has a 90 percent chance of success. (Photo provided to China News Service)
