About the Authors

Yu Ding

Affiliation Department of Rehabilitation Medicine and Pain Management Center, Navy General Hospital, Beijing, China

Dike Ruan

ruyi_2013@yeah.net

Affiliation Department of Orthopaedics, Navy General Hospital, Beijing, China

Keith D. K. Luk

Affiliation Department of Orthopaedics and Traumatology, The University of Hong Kong, Pokfulam, Hong Kong, China

Qing He

Affiliation Department of Orthopaedics, Navy General Hospital, Beijing, China

Chaofeng Wang

Affiliation Department of Orthopaedics, Navy General Hospital, Beijing, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: DR KDKL. Performed the experiments: YD. Analyzed the data: CW. Contributed reagents/materials/analysis tools: QH. Wrote the paper: YD.