[1] Stanford Univ, Med Ctr, Div Immunol & Rheumatol, Redwood City, CA USA
[2] Nippon Med Sch, Grad Sch Med, Dept Allergy & Rheumatol, Tokyo, Japan
[3] Univ Chile, Hosp Clin, Dept Med, Sect Rheumatol, Santiago, Chile
[4] Univ Pavia, Dept Internal Med & Therapeut, Pavia, Lombardy, Italy
[5] Fdn IRCCS Policlin San Matteo, Rheumatol Div, Pavia, Lombardy, Italy
[6] Italian Soc Rheumatol, Epidemiol Res Unit, Milan, Italy
[7] Royal Natl Hosp Rheumat Dis, Bath, England
[8] Univ Bath, Dept Life Sci, Bath, England
[9] Arthrit Australia, Glebe, NSW, Australia
[10] Ctr Hosp Baixo Vouga, Rheumatol Dept, Aveiro, Portugal
[11] Aveiro Rheumatol Res Ctr, Egas Moniz Hlth Alliance, Aveiro, Portugal
[12] Univ Lisbon, Fac Med, Ctr Acad Med Lisboa, Inst Med Mol,Rheumatol Res Unit, Lisbon, Portugal
[13] Univ Catania, Policlin G Rodol San Marco, Reg Referral Ctr Rare Lung Dis, Catania, Italy
[14] Univ Chicago, Dept Med, Sect Rheumatol, Chicago, IL USA
[15] Univ Calif Los Angeles, David Geffen Sch Med, Dept Med, Div Rheumatol, Los Angeles, CA USA
[16] Perelman Sch Med, Philadelphia, PA USA
[17] Corporal Michael J Crescenz Dept Vet Affairs Med C, Dept Dermatol, Philadelphia, PA USA
[18] Natl Inst Resp Dis Ismael Cosio Villegas, Rheumatol Serv, Mexico City, Mexico
[19] Tosei Gen Hosp, Dept Resp Med & Allergy, Seto, Aichi, Japan
[20] Vall dHebron Univ Hosp, Internal Med Dept, Syst Autoimmune Dis Unit, Barcelona, Spain
[21] NIAMS, Bethesda, MD USA
[22] Univ Milano Bicocca, Sch Med & Surg, Milan, Italy
[23] Univ Pittsburgh, Sch Med, Div Rheumatol & Clin Immunol, Pittsburgh, PA USA
[24] Stanford Univ, Med Ctr, Dept Dermatol, Redwood City, CA USA
[25] Univ Duisburg Essen, Ruhrlandklin Univ Hosp, Ctr Interstitial & Rare Lung Dis, Pneumol Dept, Essen, Germany
[26] NIEHS, Clin Res Branch, Environm Autoimmun Grp, NIH, Bethesda, MD USA
[27] Karolinska Inst, Dept Med, Div Rheumatol, Solna, Stockholm, Sweden
[28] Univ Med Ctr Gottingen, Dept Neurol, Gottingen, Germany
[29] Univ Hosp Brandenburg, Med Sch Theodor Fontane, Dept Neurol & Pain Treatment, Immanuel Klin Rudersdorf, Berlin, Germany
[30] Inst Nacl Enfermedades Resp Ismael Cosio Villegas, Interstitial Lung Dis & Rheumatol Units, Mexico City 14080, Mexico
[31] McGill Univ, Jewish Gen Hosp, Dept Med, Div Rheumatol, Montreal, PQ, Canada
[32] IIS Fdn Jimenez Diaz, Div Rheumatol, Madrid, Spain
[33] Univ Cantabria, Med & Psychiat Dept, Santander, Spain
[34] Univ Sydney, Royal Prince Alfred Hosp, Dept Resp Med, Sydney, Australia
[35] Brigham & Womens Hosp, Dept Med, Div Pulm & Crit Care Med, Boston, MA USA