1. 1. The Canadian Renal Failure Register: Annual Reports 1981 to 1986, Statistics Canada, Health and Welfare Canada, The Kidney Foundation of Canada, Suite 780, 5160, boulevard Décarie, Montreal, Canada, H3X 2H9
2. 2. The Canadian Organ Replacement Register: Annual Reports 1987 to 1992, The Canadian Institute for Health Information, 250 Ferrand Drive, Don Mills, Ontario, Canada, M3C 2T9
3. 3. SAS Technical Report: P-179, Release 6.03, SAS Institute Inc Cary, North Carolina, USA 1988, p 59
4. Kaplan EL, Meier P: Non parametric estimation from incomplete observations. J Am Statist Assoc 53: 457, 1958
5. Cox DR: Regression models and life tables. J Royal Stat Soc 34: 187, 1972