1. Interstitial Lung Disease Program, National Jewish Health, Denver, Colorado
2. Endpoint Outcomes, Boston, Massachusetts
3. Department of Ophthalmology, University of Colorado Anschutz Medical Campus, Aurora, Colorado
4. Division of Pulmonary Medicine, University of Utah, Salt Lake City, Utah
5. Interstitial Lung Disease Program, University of Michigan, Ann Arbor, Michigan; and
6. Genentech, South San Francisco, California