1. Carcinoma of the colon and rectum in geriatric patients;Wobbes;Ageing,1985
2. Surgical treatment options for colorectal cancer;McGinnis;Cancer,1994
3. Colorectal cancer;Donald;Can FamPhysician,1993
4. Cancer statistics;Silverberg;Cancer,1985
5. Colon carcinoma;Block;Geriatrics,1989