PT - JOURNAL ARTICLE AU - Nancy Olivieri TI - I beg to differ DP - 2002 Jul 09 TA - Canadian Medical Association Journal PG - 11--11 VI - 167 IP - 1 4099 - http://www.cmaj.ca/content/167/1/11.1.short 4100 - http://www.cmaj.ca/content/167/1/11.1.full SO - CMAJ2002 Jul 09; 167