About the Authors

Zhong Wang

john.wang@nih.gov

Affiliation Clinical Trials and Outcomes Branch, Intramural Research Program, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland

Frederick A. Anderson Jr

Affiliation Center for Outcomes Research, University of Massachusetts Medical School, Worcester, Massachusetts

Michael Ward

Affiliation Clinical Trials and Outcomes Branch, Intramural Research Program, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland

Timothy Bhattacharyya

Affiliation Clinical Trials and Outcomes Branch, Intramural Research Program, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: ZW FA MW TB. Performed the experiments: FA. Analyzed the data: ZW. Contributed reagents/materials/analysis tools: FA. Wrote the paper: ZW TB.