PT - JOURNAL ARTICLE AU - Heather Kent TI - At wit's end DP - 2001 Mar 20 TA - Canadian Medical Association Journal PG - 841--841 VI - 164 IP - 6 4099 - http://www.cmaj.ca/content/164/6/841.short 4100 - http://www.cmaj.ca/content/164/6/841.full SO - CMAJ2001 Mar 20; 164