PT - JOURNAL ARTICLE AU - L. John Hoffer AU - Jack Mendelson TI - Clinical trials registry AID - 10.1503/cmaj.1041673 DP - 2005 Apr 12 TA - Canadian Medical Association Journal PG - 980--980-a VI - 172 IP - 8 4099 - http://www.cmaj.ca/content/172/8/980.2.short 4100 - http://www.cmaj.ca/content/172/8/980.2.full SO - CMAJ2005 Apr 12; 172