PT - JOURNAL ARTICLE AU - Brophy, J. M. AU - Joseph, L. TI - Practice variations, chance and quality of care DP - 1998 Oct 20 TA - Canadian Medical Association Journal PG - 949--952 VI - 159 IP - 8 4099 - http://www.cmaj.ca/content/159/8/949.short 4100 - http://www.cmaj.ca/content/159/8/949.full SO - CMAJ1998 Oct 20; 159