TY - JOUR T1 - Cholera and a tale of two cities JF - Journal of Epidemiology and Community Health JO - J Epidemiol Community Health SP - 4 LP - 4 VL - 59 IS - 1 AU - John R Ashton Y1 - 2005/01/01 UR - http://jech.bmj.com/content/59/1/4.abstract N2 - One of the great tales of public health, imbibed with all students on their Masters of Public Health course, is that of John Snow and … ER -