1. Department of Orthopedic Surgery, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
2. Department of Periodontology, Justus-Liebig-University of Giessen, Ludwigstraße 23, 35392 Giessen, Germany
3. LIMES Institute, Department of Molecular Brain Physiology and Behavior, University of Bonn, Carl-Troll-Str. 31, 53115 Bonn, Germany
4. Department of Orthopaedics and Traumatology, Biomatics Group, University Medical Center of the Johannes Gutenberg University, Langenbeckstr. 1, 55131 Mainz, Germany
5. Department of Orthopedic Surgery, The Fifth People's Hospital of Sichuan Province, Chengdu, China