1. Department of OrthopedicsSouthwest HospitalThird Military Medical UniversityChongqing China
2. Department of Biomedical Materials ScienceThird Military Medical UniversityChongqing China
3. Department of General SurgeryChinese People's Liberation Army General HospitalBeijing China
4. Department of Blood PurificationGeneral Hospital of Shenyang Military Area CommandShenyang China