A M Egan1, D McPhillips1, S Sarkar2, D P Breen3. 1. Interventional Respiratory Unit, Department of Respiratory Medicine, Galway University Hospitals, Galway, Ireland. 2. Department of Pulmonary Medicine, Franklin Square Hospital, Baltimore, MD 21237, USA. 3. Interventional Respiratory Unit, Department of Respiratory Medicine, Galway University Hospitals, Galway, Ireland david.breen@hse.ie.