1. Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, University of Michigan, Ann Arbor, MI.
2. Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, Duke University, Durham, NC.
3. Center for Clinical Management Research (CCMR) Veteran Affairs Ann Arbor, Ann Arbor VA.
4. Institute for Healthcare Policy and Innovation (IHPI), University of Michigan, Ann Arbor, MI.