PT - JOURNAL ARTICLE ED - , TI - Small-area variations: what are they and what do they mean? Health Services Research Group DP - 1992 Feb 15 TA - Canadian Medical Association Journal PG - 467--470 VI - 146 IP - 4 4099 - http://www.cmaj.ca/content/146/4/467.short 4100 - http://www.cmaj.ca/content/146/4/467.full SO - CMAJ1992 Feb 15; 146