Funding for this research was provided by:
National Institutes of Health (U01GM092691, UH2AR067677, U19AI111224)
Doris Duke Charitable Foundation (#2013097)
National Institute of Arthritis and Musculoskeletal and Skin Diseases (F31AR070582)
Rheumatology Research Foundation (Tobé and Stephen E. Malawista, MD Endowment in Academic Rheumatology)
Received: 29 January 2018
Accepted: 5 October 2018
First Online: 19 October 2018
Ethics approval and consent to participate
: The protocol (2014P002477) for analysis and data sharing was approved by the institutional review board of Brigham and Women’s Hospital subject to applicable laws and regulations and ethical principles consistent with the Declaration of Helsinki. The names of the ethics committees that approved the subject recruitment at each site are provided in Additional file InternalRef removed: Table S7. All subjects gave written informed consent.
: The authors declare that they have no competing interests.
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