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Kanadischer Medizinphysiker und Pionier der Strahlentherapie
Harold Johns (* 4. July 1915 in Sichuan; † 23. August 1998) was a kanadischer Medizinphysiker und Pionier der Strahlentherapie. He was 83 years old. His education included University of Toronto and McMaster University. He worked at University of Toronto. He received 4 awards, including Officer of the Order of Canada, Canada Gairdner International Award.