1. Department of Pulmonary, Critical Care and Sleep Medicine, University of California San Diego, San Diego, California;
2. Division of Pulmonary Medicine, Mayo Clinic Hospital, Phoenix, Arizona;
3. Division of Pulmonary Medicine, Mayo Clinic, Scottsdale, Arizona;
4. Division of Adult Psychiatry, Mayo Clinic Hospital, Phoenix, Arizona;
5. Department of Radiology, Mayo Clinic, Scottsdale, Arizona;
6. Division of Gastroenterology and Hepatology, Mayo Clinic, Scottsdale, Arizona;
7. Division of Rheumatology, Mayo Clinic, Scottsdale, Arizona;
8. Division of Biostatistics, Mayo Clinic, Scottsdale, Arizona