About the Authors

Jianying Zhang

Affiliation MechanoBiology Laboratory, Departments of Orthopaedic Surgery, Bioengineering, Mechanical Engineering and Materials Science, and Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America

James H-C. Wang

wanghc@pitt.edu

Affiliation MechanoBiology Laboratory, Departments of Orthopaedic Surgery, Bioengineering, Mechanical Engineering and Materials Science, and Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JHW. Performed the experiments: JZ. Analyzed the data: JZ JHW. Contributed reagents/materials/analysis tools: JHW. Wrote the paper: JHW JZ.