TY - JOUR T1 - Night shift JF - Canadian Medical Association Journal JO - CMAJ SP - 79 LP - 79 DO - 10.1503/cmaj.1041194 VL - 172 IS - 1 AU - Karen Kelly Robson Y1 - 2005/01/04 UR - http://www.cmaj.ca/content/172/1/79.abstract ER -