1 From the Department of Respiratory Medicine, St.Vincent's University Hospital, Dublin, Ireland, School of Medicine and Medical Science, University College Dublin, Ireland, and.
2 From the Department of Respiratory Medicine, St.Vincent's University Hospital, Dublin, Ireland, School of Medicine and Medical Science, University College Dublin, Ireland, and emer.kelly@svuh.ie.
3 From the Department of Respiratory Medicine, St.Vincent's University Hospital, Dublin, Ireland.
4 School of Medicine and Medical Science, University College Dublin, Ireland, and.
5 Department of Radiology, St. Vincent's University Hospital, Dublin, Ireland.