1. Penn State Health Milton S Hershey Medical Center, 12311, Hershey, Pennsylvania, United States
2. VA Eastern Colorado Health Care System, 19982, Department of Medicine, Division of Pulmonary Sciences and Critical Care Medicine , Aurora, Colorado, United States
3. University of Washington, 7284, Seattle, Washington, United States
4. Penn State Health Milton S Hershey Medical Center, 12311, Hershey, Pennsylvania, United States;