121
by Harris, R, Read, A P
Published in BMJ (1981)
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122
by Davis, P, Read, A E
Published in Gut (1975)
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123
by Arora, B, Read, A E
Published in Gut (1968)
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125
126
by READ, A. A., Foskett, E.
Published in The Library (1898)
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130
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