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. 1948 Mar;29(3):91–94.

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The Royal Medico-Chirurgical Society of Glasgow

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License, which permits non-commercial use and redistribution provided that the original author and source are credited.

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PMCID: PMC5966075 PMID: 30438095

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