TY - JOUR T1 - European Working Time Directive faces challenges JF - Canadian Medical Association Journal JO - CMAJ SP - E39 LP - E40 DO - 10.1503/cmaj.109-3111 VL - 182 IS - 1 AU - Tiago Villaneuva Y1 - 2010/01/12 UR - http://www.cmaj.ca/content/182/1/E39.abstract ER -