By Spender Quentin   in British Journal of General Practice

ISSN:1478-5242|57|544|861-863

Royal College of General Practitioners‎(2007)‎

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By Spender Quentin   Cronk Christine   Stallings Virginia   Hediger Mary   in Annals of Human Biology

ISSN:1464-5033|15|3|191-196

Informa Healthcare‎(1988)‎

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