[1
]Department of Science and Education, The Second Affiliated Hospital of Xiamen Medical
College, Xiamen, CHINA
[2
]Department of Epidemiology and Health Statistics, Hangzhou Medical College School
of Public Health, Hangzhou, CHINA
[3
]Centre for Orthopaedic Research, Orthopedics Research Institute of Zhejiang University,
Department of Orthopaedics, The Second Affiliated Hospital of Zhejiang University
School of Medicine, Hangzhou, CHINA
[4
]School of Public Health, Hangzhou Medical College, Hangzhou, CHINA