1. Radiation Oncology Department, St Luke’s Radiation Oncology Network, Dublin, Ireland;
2. Clinical Trials Unit, St Luke’s Radiation Oncology Network, Dublin, Ireland;
3. Radiation Oncology Department, Galway University Hospital, Galway, Ireland;
4. Radiation Oncology Department, Cork University Hospital, Cork, Ireland;
5. Radiation Oncology Department, Belfast City Hospital, Belfast, UK;
6. Radiation Oncology Department, Whitfield Clinic, Waterford, Ireland;
7. Operational Services, St Luke’s Radiation Oncology Network, Dublin, Ireland;
8. Radiation Oncology Department, All Ireland Cooperative Oncology Research Group, Dublin, Ireland;
9. Radiology Department, St Luke’s Radiation Oncology Network, Dublin, Ireland