Changes

'''John Snow''' is considered the father of modern [[epidemiology]].

'''John Snow''' is considered the father of modern [[epidemiology]].

He contributed "the theory that [[cholera]] is communicated by means of a contaminated water-supply."<ref> [http://www.ph.ucla.edu/epi/snow/snowbio.html Biography of John Snow]</ref>

He contributed "the theory that [[cholera]] is communicated by means of a contaminated water-supply."<ref>[http://www.ph.ucla.edu/epi/snow/snowbio.html Biography of John Snow]</ref>

<ref>"He demonstrated that cholera is communicated by contaminated water, and he made the art of anaesthesia a science." [http://www.general-anaesthesia.com/images/john-snow.html]</ref>

<ref>"He demonstrated that cholera is communicated by contaminated water, and he made the art of anaesthesia a science." [http://www.general-anaesthesia.com/images/john-snow.html]</ref>

{{DEFAULTSORT:Snow, John}}

{{DEFAULTSORT:Snow, John}}

[[category:Scientific pioneers]]

[[Category:Scientific pioneers]]