PT - JOURNAL ARTICLE AU - David L. Sackett TI - Whither preventive medicine? DP - 2003 Jan 07 TA - Canadian Medical Association Journal PG - 12--12 VI - 168 IP - 1 4099 - http://www.cmaj.ca/content/168/1/12.1.short 4100 - http://www.cmaj.ca/content/168/1/12.1.full SO - CMAJ2003 Jan 07; 168