[1] Louisiana State Univ, Hlth Sci Ctr, New Orleans, LA 70112 USA
[2] Univ Toronto, Toronto, ON, Canada
[3] German Rheumatism Res Ctr, Berlin, Germany
[4] Charite, D-13353 Berlin, Germany
[5] Univ Michigan, Ann Arbor, MI 48109 USA
[6] Brigham & Womens Hosp, Boston, MA 02115 USA
[7] Univ Zurich Hosp, CH-8091 Zurich, Switzerland
[8] Univ Manitoba, Winnipeg, MB R3T 2N2, Canada
[9] Univ Pittsburgh, Pittsburgh, PA USA
[10] Royal Free Hosp, London NW3 2QG, England
[11] Natl Jewish Hlth, Denver, CO USA
[12] Med Univ Bialystok, Bialystok, Poland
[13] Patient Res Partner, Off Publ Hlth, New Orleans, LA USA
[14] Univ Penn, Philadelphia, PA 19104 USA
[15] Univ Dresden, Dresden, Germany
[16] Univ Crete, Iraklion, Greece
[17] Univ Cincinnati, Cincinnati, OH USA
[18] Massachusetts Gen Hosp, Boston, MA 02114 USA
[19] Boston Univ, Sch Med, Boston, MA 02118 USA
[20] Johns Hopkins Univ, Baltimore, MD USA
[21] Univ Calif San Francisco, San Francisco, CA 94143 USA
[22] Univ Lyon 1, F-69365 Lyon, France
[23] Cleveland Clin, Cleveland, OH 44106 USA
[24] Univ Ulsan, Asan Med Ctr, Ulsan 680749, South Korea
[25] NIEHS, NIH, Bethesda, MD USA
[26] Univ Adelaide, Adelaide, SA, Australia
[27] Univ Southampton, Resp Biomed Res Unit, Southampton SO9 5NH, Hants, England
[28] Mayo Clin, Coll Med, Rochester, MN USA
[29] Patient Res Partner, Bethesda, MD USA
[30] Royal Brompton Hosp, London SW3 6LY, England
[31] Natl Heart & Lung Inst, London, England
[32] Stanford Univ, Palo Alto, CA 94304 USA
[33] Scleroderma Res Consultants LLC, Avon, CT USA