1Department of Orthopedics, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, 264000 P.R. China
2Department of Intensive Care Unit, Yantai Infectious Disease Hospital, Yantai, 264000 P.R. China
3Department of Orthopedics, Canner Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100000 P.R. China
4Department of Orthopedics, The Affiliated Yantai Hospital of Binzhou Medical University, Yantai, 264000 P.R. China
5Department of Trauma and Orthopedics, Peking University People’s Hospital, Beijing, 100000 P.R. China
6Southern Medical University, Guangzhou, 510515 P.R. China
7Binzhou Medical University, Yantai, 264000 P.R. China
© The Author(s) 2020
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