[1] Massachusetts Gen Hosp, Dept Pathol, 55 Fruit St,Warren Bldg 219, Boston, MA 02114 USA
[2] Massachusetts Gen Hosp, Div Thorac Surg, Dept Surg, 55 Fruit St,Warren Bldg 219, Boston, MA 02114 USA
[3] Harvard Univ, Harvard Med Sch, Boston, MA 02115 USA
[4] Mayo Clin, Dept Lab Med & Pathol, Rochester, MN USA
[5] Univ Chicago, Dept Radiol, Chicago, IL 60637 USA
[6] Johns Hopkins Univ, Div Pulm & Crit Care Med, Baltimore, MD USA
[7] Univ Florida, Div Pulm Crit Care & Sleep Med, Gainesville, FL USA
[8] Duke Univ, Med Ctr, Dept Surg, Div Cardiovasc & Thorac Surg, Durham, NC 27710 USA
[9] Tulane Univ, Div Pulm Crit Care Med & Environm Med, New Orleans, LA 70118 USA
[10] Inova Fairfax Hosp, Adv Lung Dis & Lung Transplant Clin, Falls Church, VA USA
[11] Univ Penn, Dept Med, Perelman Sch Med, Philadelphia, PA 19104 USA
[12] Natl Jewish Hlth, Dept Radiol, Denver, CO USA
[13] Stanford Univ, Dept Med, Div Pulm & Crit Care, Palo Alto, CA USA
[14] Michigan Med, Dept Pathol, Ann Arbor, MI USA
[15] Med Univ South Carolina, Coll Med, Div Pulm Crit Care & Sleep Med, Charleston, SC 29425 USA
[16] Stanford Univ, Dept Med, Div Pulm Allergy & Crit Care Med, Stanford, CA 94305 USA
[17] Houston Methodist Hosp, Pulm Crit Care Div, Houston, TX 77030 USA
[18] Cornell Univ, Weill Cornell Coll Med, Houston, TX USA
[19] Univ Louisville, Hlth Sci Ctr, Dept Med, Div Pulm Crit Care & Sleep Med, Louisville, KY 40292 USA
[20] Henry Ford Hosp, Dept Internal Med Pulm & Crit Care Med, Detroit, MI 48202 USA
[21] Columbia Univ, Dept Med, New York, NY USA
[22] Pulm Fibrosis Fdn, Chicago, IL USA
[23] Brown Univ, Rhode Isl Hosp, Div Pulm Crit Care & Sleep Med, Providence, RI 02903 USA
[24] Brown Univ, Warren Alpert Med Sch, Providence, RI 02912 USA
[25] Kaiser Permanente San Francisco, Dept Pulm & Crit Care Med, San Francisco, CA USA
[26] Univ Calif San Francisco, Dept Med, San Francisco, CA 94143 USA