1. Orthopedic Institute, Department of Orthopedics, The First Affiliated Hospital, Soochow University, Suzhou, People’s Republic of China
2. Institute of Metal Research, Chinese Academy of Sciences, Shenyang, People’s Republic of China
3. Julius Wolff Institute and Center for Musculoskeletal Surgery, Berlin-Brandenburg Center for Regenerative Therapies, Charité-Universitätsmedizin Berlin, Berlin, Germany
4. Laboratory for Biomaterials and Bioengineering, CRC-I, Department of Min-Met-Materials Engineering & CHU de Québec Research Center, Laval University, Quebec City, Canada
5. Center for Health Science and Engineering (CHSE), School of Health Sciences and Biomedical Engineering, Hebei University of Technology, Tianjin, People’s Republic of China
6. Department of Spine Surgery, Tianjin Hospital, Tianjin University, Tianjin, People’s Republic of China