Harvey Littlejohn, M.B., C.M., B.Sc.Ed., F.R.C.S., F.R.S.EdBr Med J 1927; 2 doi: http://dx.doi.org/10.1136/bmj.2.3477.369 (Published 27 August 1927) Cite this as: Br Med J 1927;2:369
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