1 Faculty of Health Science, University of Malta, Msida, Malta; Faculty of Medicine (AMC) - University of Amsterdam, Amsterdam, the Netherlands. Electronic address: susan.mercieca@um.edu.mt.
2 Department of Radiation Oncology, the Netherlands Cancer Institute, Amsterdam, the Netherlands.
3 Clinical Oncology, St. James's University Hospital, Leeds Teaching Hospitals Trust, Leeds, UK.
4 Department of Clinical Oncology, Mount Vernon Hospital, Middlesex, UK.
5 Department of Clinical Oncology, The Christie NHS Foundation Trust, Manchester, UK.
6 University of Manchester, Manchester Academic Health Centre, The Christie NHS Foundation Trust, Manchester, UK.