TY - JOUR T1 - Shift work may be hazardous to your health, doctors warned JF - Canadian Medical Association Journal JO - CMAJ SP - 243 LP - 244 VL - 141 IS - 3 AU - M. Pare Y1 - 1989/08/01 UR - http://www.cmaj.ca/content/141/3/243.abstract ER -