[1] Columbia Univ Coll Phys & Surg, Rheumatol, 630 W 168th St, New York, NY 10032 USA
[2] Columbia Univ Coll Phys & Surg, Pediat Rheumatol, 630 W 168th St, New York, NY 10032 USA
[3] 3Exagen Diagnost, Albuquerque, CA USA
[4] Columbia Univ Coll Phys & Surg, Dept Med, Rheumatol, New York, NY USA