[1] Mayo Clin, Dept Internal Med, Div Pulm Allergy & Sleep Med, Jacksonville, FL USA
[2] Oklahoma Med Res Fdn, Arthrit & Clin Immunol Program, 825 NE 13th St, Oklahoma City, OK 73104 USA
[3] Univ Oklahoma, Hlth Sci Ctr, Oklahoma City, OK USA
[4] Oklahoma City Dept Vet Affairs Med Ctr, Med & Res Serv, Oklahoma City, OK USA
[5] Sjogrens Fdn, Reston, VA 02115 USA
[6] Univ Cincinnati & Med Serv, Div Pulm Crit Care & Sleep Med, VA Med Ctr, Cincinnati, OH USA
[7] Uniformed Serv Univ Hlth Sci, Bethesda, MD 20814 USA
[8] Mayo Clin, Dept Pulm Med, Rochester, MN USA
[9] Univ Iowa Hlth Care, Carver Coll Med, Div Pulm Crit Care & Occupat Med, Iowa City, IA USA
[10] Duke Univ, Med Ctr, Div Rheumatol & Immunol, Durham, NC USA
[11] Natl Jewish Hlth, Denver, CO USA
[12] Washington Univ, Ctr Canc, Washington, DC USA
[13] NYU, Winthrop Hosp, New York, NY USA
[14] NYU Langone Hlth, New York, NY USA
[15] Univ Calif San Francisco, Div Rheumatol, San Francisco, CA 94143 USA
[16] Univ Calif Berkeley, Sjogrens Clin, Sch Optometry, Berkeley, CA 94720 USA