Funding for this research was provided by:
National Institute on Aging (AG46927)
National Institute of Arthritis and Musculoskeletal and Skin Diseases (AR066477, AR065527, AR50245)
Text and Data Mining valid from 2018-10-17
Received: 25 May 2018
Accepted: 19 September 2018
First Online: 17 October 2018
Ethics approval and consent to participate
: This study was approved by the Duke University Medical Center Institutional Review Board, and all subjects gave their informed consent to participate in the study.
: Not applicable.
: The authors declare that they have no competing interests<b>.</b>
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