20 years ago: British Homeopathic Journal, July 1984.
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D000818:Animals; D005060:Europe; D049669:History, 16th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006705:Homeopathy / Q000266:history*; D006801:Humans; D012106:Research / Q000266:history; D006113:United Kingdom