1 Department of Infectious Diseases, St Vincent's University Hospital, Dublin 4, Ireland.
2 Department of Radiology, St. Vincent's University Hospital, Dublin 4, Ireland.
3 Department of Respiratory Medicine, St. Vincent's University Hospital, Dublin 4, Ireland and School of Medicine, University College Dublin, Dublin 4, Ireland.
4 Department of Radiology, St. Vincent's University Hospital, Dublin 4, Ireland and School of Medicine, University College Dublin, Dublin 4, Ireland.
5 School of Medicine, University College Dublin, Dublin 4, Ireland and Department of Histopathology, St Vincent's University Hospital, Dublin 4, Ireland.
6 Department of Infectious Diseases, St Vincent's University Hospital, Dublin 4, Ireland.