Endemic syphilis in Colonial Canada.
Horne
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D002170:Canada; D018595:Colonialism / Q000266:history*; D019353:Endemic Diseases / Q000266:history*; D049671:History, 18th Century; D049672:History, 19th Century; D012423:Rural Health / Q000266:history*; D013587:Syphilis / Q000266:history*