1 Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA. Electronic address: [email protected].
2 Department of Internal Medicine, Institute for Healthcare Policy & Innovation, University of Michigan, Ann Arbor, MI.
3 Department of Internal Medicine, Institute for Healthcare Policy & Innovation, University of Michigan, Ann Arbor, MI; VA Center for Clinical Management Research, HSR&D Center of Innovation, Ann Arbor, MI.