1. St Vincent's University Hospital, 58038, Pulmonary and Sleep Disorders Unit, Dublin, Dublin, Ireland
2. University College Dublin - National University of Ireland, 8797, School of Medicine, Dublin, Ireland
3. St Vincent's University Hospital, 58038, Department of Radiology, Dublin, Dublin, Ireland
4. St Vincent's University Hospital, 58038, Department of Cardiology, Dublin, Dublin, Ireland
5. St. Vincent's University Hospital, Department of Endocrinology and Diabetes Mellitus, Dublin 4, Ireland
6. University College Dublin, 8797, Radiology, Dublin, Ireland
7. University College Dublin, 8797, Dublin, Ireland;