PT - JOURNAL ARTICLE AU - Sean Gupton TI - Between five and six DP - 2003 May 13 TA - Canadian Medical Association Journal PG - 1302--1303 VI - 168 IP - 10 4099 - http://www.cmaj.ca/content/168/10/1302.short 4100 - http://www.cmaj.ca/content/168/10/1302.full SO - CMAJ2003 May 13; 168