PT - JOURNAL ARTICLE AU - A. C. Irwin TI - Average duration of life DP - 1972 Jun 24 TA - Canadian Medical Association Journal PG - 1287b--1287 VI - 106 IP - 12 4099 - http://www.cmaj.ca/content/106/12/1287b.short 4100 - http://www.cmaj.ca/content/106/12/1287b.full SO - CMAJ1972 Jun 24; 106