TY - JOUR T1 - Nordion retreats from defamation lawsuit JF - Canadian Medical Association Journal JO - CMAJ SP - E657 LP - E657 DO - 10.1503/cmaj.109-3336 VL - 182 IS - 13 AU - Dan Lett Y1 - 2010/09/21 UR - http://www.cmaj.ca/content/182/13/E657.abstract ER -