Institute of Orthopedics,General Hospital of Lanzhou Military Command of PLA,Lanzhou 730050,China;
Institute of Orthopedics,General Hospital of Lanzhou Military Command of PLA,Lanzhou 730050,China;
Institute of Orthopedics,General Hospital of Lanzhou Military Command of PLA,Lanzhou 730050,China;
Institute of Orthopedics,General Hospital of Lanzhou Military Command of PLA,Lanzhou 730050,China;