PT - JOURNAL ARTICLE AU - T. M. Shannon TI - Trials of CCBs DP - 1998 Jan 13 TA - Canadian Medical Association Journal PG - 21--23 VI - 158 IP - 1 4099 - http://www.cmaj.ca/content/158/1/21.2.short 4100 - http://www.cmaj.ca/content/158/1/21.2.full SO - CMAJ1998 Jan 13; 158