PT - JOURNAL ARTICLE AU - George A. Heckman AU - Robert S. McKelvie TI - Necessary cautions when considering digoxin in heart failure AID - 10.1503/cmaj.061309 DP - 2007 Feb 27 TA - Canadian Medical Association Journal PG - 644--645 VI - 176 IP - 5 4099 - http://www.cmaj.ca/content/176/5/644.short 4100 - http://www.cmaj.ca/content/176/5/644.full SO - CMAJ2007 Feb 27; 176