TY - JOUR T1 - United States scrambles for secure, safe isotope supply JF - Canadian Medical Association Journal JO - CMAJ SP - 427 LP - 428 DO - 10.1503/cmaj.109-3187 VL - 182 IS - 5 AU - Cal Woodward Y1 - 2010/03/23 UR - http://www.cmaj.ca/content/182/5/427.abstract ER -