1. Wetle T. Age as a risk factor for inadequate treatment. JAMA 1987; 258: 516.
2. U.S. Renal Data System, USRDS 1995 Annual Data Report. The National Institutes of Health, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, M.D., April 1995.
3. Canadian Organ Replacement Register, 1993 Annual Report. Canadian Institute for Health Information. Don Mills, Ontario, March 1995.
4. Report on management of renal failure in Europe, XXV, 1994, Nephrol Dial Transpl 1996; 11 (Suppl. 1).
5. Japanese Dialysis Registry: 1985, 1986, 1988. Japanese Society of Nephrology, Tokyo, April 1994.