TY - JOUR T1 - Protecting Canadian travellers: Prevention is better than cure JF - Canadian Medical Association Journal JO - CMAJ SP - 373 LP - 373 DO - 10.1503/cmaj.080027 VL - 178 IS - 4 AU - Jay S. Keystone, MD MSc(CTM) Y1 - 2008/02/12 UR - http://www.cmaj.ca/content/178/4/373.abstract ER -