1. Department of Neurology, Affiliated Hospital of Hebei University, Baoding, Hebei Province, China
2. Department of Ophthalmology, Baoding First Central Hospital, Baoding, Hebei Province, China
3. Department of Hepatobiliary Surgery, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong Province, China
4. Department of Orthopaedics, The Third People’s Hospital of Wuxi and The Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu Province, China
5. Department of Orthopaedics, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong Province, China