About the Authors

Joseph B. Vella

Affiliations Department of Orthopedic Surgery, Stem Cell Research Center, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania, United States of America, Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America

Seth D. Thompson

Affiliation Department of Orthopedic Surgery, Stem Cell Research Center, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania, United States of America

Mark J. Bucsek

Affiliations Department of Orthopedic Surgery, Stem Cell Research Center, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania, United States of America, Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America

Minjung Song

Affiliation Department of Orthopedic Surgery, Stem Cell Research Center, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania, United States of America

Johnny Huard

jhuard@pitt.edu

Affiliations Department of Orthopedic Surgery, Stem Cell Research Center, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania, United States of America, Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America, McGowen Institute of Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America

Competing Interests

The authors have read the journal's policy and have the following conflicts: The authors wish to disclose that Dr. Johnny Huard received remuneration as a consultant with Cook MyoSite, Inc. during the performance period of this project. None of the other authors have any potential conflicts of interest to disclose. This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed experiments: JBV SDT MJB MS JH. Performed experiments: JBV SDT MJB MS. Analyzed data: JBV SDT MJB MS. Contributed reagents/materials/analysis tools: JH. Wrote the manuscript: JBV SDT JH.