A. Letchworth
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T. Chard,
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T. Chard,
A. Letchworth,
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T. Chard,
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1972,
The Journal of obstetrics and gynaecology of the British Commonwealth.
A. Noble,
A. Letchworth,
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British journal of obstetrics and gynaecology.
T. Chard,
Y. B. Gordon,
A. Letchworth,
1976,
British journal of obstetrics and gynaecology.
A. Noble,
E. Belsey,
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1978,
British journal of obstetrics and gynaecology.
A. Noble,
A. Letchworth,
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The Lancet.
L. Rushton,
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A. Letchworth,
1976,
The Lancet.
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British journal of obstetrics and gynaecology.
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A. Letchworth,
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J. Hulka,
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B. Lieberman,
1982,
The Lancet.
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A. Letchworth,
1978,
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C. Wright,
A. Letchworth,
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Journal of reproductive medicine.
B. Lieberman,
A. Letchworth,
1976,
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A. Noble,
A. Letchworth,
T. Williams,
1977,
The Lancet.
T. Chard,
J. Landon,
A. Letchworth,
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A. Letchworth,
1976,
Contributions to gynecology and obstetrics.
A. Noble,
A. Letchworth,
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1984,
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A. Letchworth,
I. Diamond,
1990,
Journal of obstetrics and gynaecology.