PT - JOURNAL ARTICLE AU - Scott, G. W. TI - Guidelines are essential for quality assurance in practice DP - 1990 Sep 15 TA - Canadian Medical Association Journal PG - 473--474 VI - 143 IP - 6 4099 - http://www.cmaj.ca/content/143/6/473.short 4100 - http://www.cmaj.ca/content/143/6/473.full SO - CMAJ1990 Sep 15; 143