TY - JOUR T1 - Obama and the opportunity to eliminate nuclear weapons JF - Canadian Medical Association Journal JO - CMAJ SP - 151 LP - 151 DO - 10.1503/cmaj.082009 VL - 180 IS - 2 AU - Helen Caldicott MD Y1 - 2009/01/20 UR - http://www.cmaj.ca/content/180/2/151.abstract ER -