1. Cancer facts and figures: 1990;American Cancer Society,1990
2. The treatment of cancer pain;Foley;N Engl J Med,1985
3. Long-acting oral morphine in cancer pain analgesia;Savarese;Clin J Pain,1987
4. Continuous subcutaneous infusion of narcotics using a portable disposable device in patients with advanced cancer;Bruera;Cancer Treat Rep,1987
5. Intravenous infusion of opioids in cancer pain: clinical review and guidelines for use;Portenoy;Cancer Treat Rep,1985