Affiliation: | 1. Henan Eye Institute, Henan Provincial People's Hospital, Zhengzhou, China;2. Department of Neurosurgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China;3. Department of Gastroenterology, Henan Provincial People's Hospital, Zhengzhou, China;4. Department of Oncology, Henan Provincial People's Hospital, Zhengzhou, China;5. Department of Neurosurgery, Henan Provincial People's Hospital, Zhengzhou, China |