John Snow (1813-1858) and Benjamin Ward Richardson (1828-1896): a notable friendship.
Roberts
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D000758:Anesthesia / Q000266:history*; D015984:Causality; D002771:Cholera / Q000266:history*; D015981:Epidemiologic Factors; D049672:History, 19th Century; D006801:Humans; D006113:United Kingdom; D014504:Urban Health / Q000266:history*; D014881:Water Supply / Q000266:history*