1. Pittsburgh Heart, Lung, Blood, and Vascular Medicine InstituteUniversity of Pittsburgh Pittsburgh Pennsylvania
2. Division of Pulmonary, Allergy, and Critical Care Medicine, Department of MedicineUniversity of Pittsburgh Pittsburgh Pennsylvania
3. Department of Health Policy and ManagementRollins School of Public Health, Emory University Atlanta Georgia
4. Department of Informatics and Networked SystemsUniversity of Pittsburgh Pittsburgh Pennsylvania
5. Division of Hematology/Oncology, Department of MedicineUniversity of Pittsburgh Medical Center Pittsburgh Pennsylvania
6. Division of General Internal Medicine, Department of MedicineUniversity of Pittsburgh Pittsburgh Pennsylvania