TY - JOUR T1 - Ideological chasms divide US presidential hopefuls JF - Canadian Medical Association Journal JO - CMAJ SP - 1484 LP - 1486 DO - 10.1503/cmaj.071619 VL - 177 IS - 12 AU - Janet Rae Brooks Y1 - 2007/12/04 UR - http://www.cmaj.ca/content/177/12/1484.abstract ER -