Funding for this research was provided by:
National Institutes of Health (8P20-GM-103464, P20-RR-020173)
National Institute of Arthritis and Musculoskeletal and Skin Diseases (K23AR066724)
Arthritis Foundation (Innovative Research Grant)
Nancy Taylor Foundation for Chronic Diseases
Delaware Community Foundation
Open Net Foundation
Received: 21 September 2017
Accepted: 19 December 2017
First Online: 8 January 2018
Ethics approval and consent to participate
: This study was approved by the Nemours Institutional Review Boards. Samples were selected from our repository, which is formed under a separate Nemours Institutional Review Boards protocol, with consents and assents.
: Not applicable
: The authors declare that they have no competing interests.
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