Affiliation: | Department of Radiotherapy, Medical University of Vienna, Vienna, Austria;† Department of Radiation Oncology, Stronach Regional Cancer Centre, Newmarket, Ontario, Canada;‡ Department of Radiation Oncology, Princess Margaret Hospital, Toronto, Ontario, Canada;* Department of Oncology, Aarhus University Hospital, Aarhus, Denmark;§ Department of Radiotherapy, Institute Gustave Roussy, Villejuif, France |