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. 1974 Jul;67(7):686–688. doi: 10.1177/003591577406700749

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University of Birmingham educational services unit.

P Fleetwood-Walker

P Fleetwood-Walker

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PMCID: PMC1651749 PMID: 4137346

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Articles from Proceedings of the Royal Society of Medicine are provided here courtesy of Royal Society of Medicine Press

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