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On 4 June 1921 Sir James Mackenzie defended his thesis, The Opportunities of the General Practitioner are Essential for the Investigation of Disease and the Progress of Medicine, in the British Medical Journal. Just under a century later, there is still a message for all researchers in primary care which resonates. A short précis of a full commentary from the International Journal of Epidemiology is given below. © British Journal of General Practice.

Original publication




Journal article


British Journal of General Practice

Publication Date





158 - 159