TY - JOUR T1 - Doctors question annual TB testing of health workers JF - Canadian Medical Association Journal JO - CMAJ SP - E904 LP - E905 DO - 10.1503/cmaj.109-5797 VL - 191 IS - 32 AU - Lauren Vogel Y1 - 2019/08/12 UR - http://www.cmaj.ca/content/191/32/E904.abstract ER -