Funding for this research was provided by:
National Human Genome Research Institute (U01HG006389, U01HG006382, U01HG006375, U01HG008666, U01HG006830, U01HG006379, U01HG008685, U01HG008673, U01HG006828, U01HG008680, U01HG008701, U01HG004424, U01HG006388, U01HG004438, U01HG006380, U01H00G8672, U01HG00676, U01HG008684, U01HG008664, U01HG008679, U01HG008657, U01HG006385, U01HG006378)
U.S. Department of Veterans Affairs (I01BX001834)
National Institute of Allergy and Infectious Diseases (R01AI024717, U01AI130830)
National Institute of Arthritis and Musculoskeletal and Skin Diseases (P30AR070549)
Received: 19 February 2019
Accepted: 11 June 2019
First Online: 17 July 2019
Ethics approval and consent to participate
: Protocols for this study were approved by the Institutional Review Boards (IRBs) at the institutions where participants were recruited; all included participants provided written informed consent prior to inclusion in the study.
: “Not applicable”.
: The authors declare that they have no competing interests.