TY - JOUR T1 - Tough choices? JF - Canadian Medical Association Journal JO - CMAJ SP - 592 LP - 592-a DO - 10.1503/cmaj.110-2044 VL - 182 IS - 6 AU - Ralph F. Bloch Y1 - 2010/04/06 UR - http://www.cmaj.ca/content/182/6/592.2.abstract ER -