TY - JOUR T1 - SARS had immense impact on some MDs' practices JF - Canadian Medical Association Journal JO - CMAJ SP - 698 LP - 698 VL - 169 IS - 7 AU - Brad Mackay Y1 - 2003/09/30 UR - http://www.cmaj.ca/content/169/7/698.1.abstract ER -