BEIJING, July 19, 2016 (Xinhua) -- Liu Zhongjun (R), a surgeon of Peking University Third Hospital, walks with his patient in Beijing, capital of China, July 19, 2016. Chinese doctors succeed in 3D-printed vertebrae implant on June 12 for a patient who was diagnosed with chordoma, a rare cancer that can occur in the spine and skull. (Xinhua/Li Wen)
