About the Authors

Glyn D. Palmer

Contributed equally to this work with: Glyn D. Palmer, Mukundan G. Attur

palmegd@ortho.ufl.edu

Current address: Department of Orthopaedics and Rehabilitation, University of Florida, Gainesville, Florida, United States of America

Affiliation Division of Rheumatology, New York University School of Medicine and NYU Hospital for Joint Diseases, New York, New York, United States of America

Mukundan G. Attur

Contributed equally to this work with: Glyn D. Palmer, Mukundan G. Attur

Affiliation Division of Rheumatology, New York University School of Medicine and NYU Hospital for Joint Diseases, New York, New York, United States of America

Qing Yang

Affiliation Division of Rheumatology, New York University School of Medicine and NYU Hospital for Joint Diseases, New York, New York, United States of America

James Liu

Affiliation Division of Rheumatology, New York University School of Medicine and NYU Hospital for Joint Diseases, New York, New York, United States of America

Paxton Moon

Affiliation Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, Ontario, Canada

Frank Beier

Affiliation Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, Ontario, Canada

Steven B. Abramson

Affiliation Division of Rheumatology, New York University School of Medicine and NYU Hospital for Joint Diseases, New York, New York, United States of America

Competing Interests

The authors have read the journal's policy and have the following conflict: Patent: 'Methods of using F-spondin as a biomarker for cartilage degenerative conditions: Attur M, Palmer GD, Amin A, and Abramson SB. Publication No: WO/2008/069975. This does not alter the authors' adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: GDP MGA QY FB SBA. Performed the experiments: GDP MGA QY JL PM. Analyzed the data: GDP MGA FB SBA. Contributed reagents/materials/analysis tools: GDP MGA FB. Wrote the paper: GDP MGA.