[1] Univ N Carolina, Thurston Arthrit Res Ctr, Osteoarthritis Act Alliance, Chapel Hill, NC USA
[2] Univ N Carolina, Dept Med, Div Rheumatol Allergy & Immunol, Chapel Hill, NC USA
[3] Univ N Carolina, Gillings Sch Global Publ Hlth, Dept Med, Dept Orthopaed,Div Rheumatol Allergy & Immunol,Dep, Chapel Hill, NC USA
[4] Univ N Carolina, Thurston Arthrit Res Ctr, 3300 Thurston Bldg,CB 7280, Chapel Hill, NC 27599 USA