PT - JOURNAL ARTICLE AU - L. Mahoney TI - The Canadian National Breast Screening Study: opportunity for a rethink DP - 1993 May 15 TA - Canadian Medical Association Journal PG - 1670--1672 VI - 148 IP - 10 4099 - http://www.cmaj.ca/content/148/10/1670.short 4100 - http://www.cmaj.ca/content/148/10/1670.full SO - CMAJ1993 May 15; 148