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On Matching
Published online by Cambridge University Press: 29 January 2018
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- Copyright © Royal College of Psychiatrists, 1980
References
MacMahon, B. & Pugh, T. F. (1970) Epidemiology. Principles and Methods. Pp 253–6. Boston: Little, Brown.Google Scholar
Mausner, J. S. & Bahn, A. K. (1974) Epidemiology. An Introductory Text. Pp 315–6. London: W. B. Saunders.Google Scholar
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