PT - JOURNAL ARTICLE AU - Janet Rae Brooks TI - Ideological chasms divide US presidential hopefuls AID - 10.1503/cmaj.071619 DP - 2007 Dec 04 TA - Canadian Medical Association Journal PG - 1484--1486 VI - 177 IP - 12 4099 - http://www.cmaj.ca/content/177/12/1484.short 4100 - http://www.cmaj.ca/content/177/12/1484.full SO - CMAJ2007 Dec 04; 177