PT - JOURNAL ARTICLE AU - Mario L. de Lemos TI - The return of “negative” trials? DP - 2003 May 27 TA - Canadian Medical Association Journal PG - 1392--1393 VI - 168 IP - 11 4099 - http://www.cmaj.ca/content/168/11/1392.2.short 4100 - http://www.cmaj.ca/content/168/11/1392.2.full SO - CMAJ2003 May 27; 168