1. Department of Respiratory Medicine St. Vincent's University Hospital Dublin Ireland
2. School of Medicine University College Dublin Dublin Ireland
3. Department of Radiology St. Vincent's University Hospital Dublin Ireland
4. Division of Cardiology University of California Los Angeles California USA
5. Department of Medicine National Jewish Health Denver Colorado USA
6. Department of Pediatrics National Jewish Health Denver Colorado USA
7. Department of Histopathology St. Vincent's University Hospital Dublin Ireland