1. Pulmonary and Critical Care Section, Veterans Affairs Puget Sound Health Care System, Seattle, Washington, USA.
2. Health Services Research and Development Center for Innovation, Veterans Affairs Puget Sound Health Care System, Seattle, Washington, USA.
3. General Medicine Service, Veterans Affairs Puget Sound Health Care System, Seattle, Washington, USA.
4. Division of General Internal Medicine, Critical Care, and Sleep Medicine, University of Washington, Seattle, Washington, USA.
5. Division of Pulmonary, Critical Care, and Sleep Medicine, University of Washington, Seattle, Washington, USA.
6. Nephrology Section, Veterans Affairs Puget Sound Health Care System, Seattle, Washington, USA.
7. Division of Nephrology, University of Washington, Seattle, Washington, USA.
8. Gastroenterology and Hepatology Service, Veterans Affairs Portland Health Care System, Portland, Oregon, USA.
9. Gastroenterology and Hepatology Division, Oregon Health & Sciences University, Portland, Oregon, USA.