1 Key Laboratory of Biomedical Information Engineering of Ministry of Education, Biomedical Informatics & Genomics Center, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China.
2 Department of Orthopaedics, Shannxi Provincial People's Hospital (The Third Affiliated Hospital of Xi'an Jiaotong University), Xi'an, Shaanxi 710068, China.