RT Journal Article SR Electronic T1 Canada ill-prepared for radiation emergencies JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1001 OP 1002 DO 10.1503/cmaj.109-3890 VO 183 IS 9 A1 Roger Collier YR 2011 UL http://www.cmaj.ca/content/183/9/1001.abstract