1. Department of Central Laboratory, Shantou Central Hospital, Shantou 515031, Guangdong, China
2. Department of Neurosurgery, Shantou Central Hospital, Shantou 515031, Guangdong, China
3. Department of Pathology, Shantou Central Hospital, Shantou 515031, Guangdong, China
4. Department of Biochemistry and Molecular Biology, Shantou University Medical College, Shantou 515041, Guangdong, China