1. Department of Oncology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark;
2. Department of Ophthalmology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark;
3. Leeds Institute Medical Research at St James’s, University of Leeds, and Leeds Cancer Centre, St James’s University Hospital, Leeds, UK;
4. Department of Physical Sciences, The Peter MacCallum Cancer Centre, Melbourne, Australia;
5. Department of Radiation Oncology, Centre Francois Baclesse, Caen, France;
6. Laboratoire de Physique Corpusculaire IN2P3/ENSICAEN, Caen, France;
7. Department of Unicaen, Normandy University, Caen, France;
8. Manchester Research Cancer Centre, Division of Cancer Sciences, University of Manchester, Manchester, UK