TY - JOUR T1 - John Snow, hero of cholera: RIP JF - Canadian Medical Association Journal JO - CMAJ SP - 1736 LP - 1736 DO - 10.1503/cmaj.080805 VL - 178 IS - 13 AU - Tom Koch, PhD Y1 - 2008/06/17 UR - http://www.cmaj.ca/content/178/13/1736.abstract ER -