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JOHN SCOTT RIDDELL, C.B.E., M.V.O., LL.D., M.B., C.M
Br Med J 1929; 2 doi: https://doi.org/10.1136/bmj.2.3599.1225 (Published 28 December 1929) Cite this as: Br Med J 1929;2:1225This is a PDF-only article. The first page of the PDF of this article appears above.