- Duncan, William, 1930- (5)
- Royal College of Radiologists (Great Britain) (3)
- Schweizerische Nationalliga für Krebsbekämpfung und Krebsforschung (2)
- Symposium on Clinical Oncology (2nd : 1980 : London, England) (1)
- Symposium on Clinical Oncology (3rd : 1981 : London, England) (1)
- Symposium on Clinical Oncology (4th : 1982 : Royal College of Radiologists) (1)
- Symposium on Clinical Oncology (5th : 1983 : London, England) (1)