By Kingston Isabel J.   Gormley Niall A.   Halford Stephen E.   in Nucleic Acids Research

ISSN:1362-4962|31|18|5221-5228

Oxford University Press‎(2003)‎

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By Melzer David   Watters Liam   Paykel Eugene   Singh Krishna   Gormley Niall   in British Journal of General Practice

ISSN:1478-5242|49|448|887-891

Royal College of General Practitioners‎(1999)‎

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