1. Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas
2. Department of Comparative Medicine, University of Washington, Seattle, Washington
3. Center for Lung Biology, University of Washington at South Lake Union, Seattle, Washington
4. Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Washington, Seattle, Washington
5. Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland