| Abstract
| - Lilienfeld AM [Department of Epidemiology, Johns Hopkins University School of Hygiene and Public Health, Baltimore, Maryland 21205, USA] and Lilienfeld DE. The 1979 Heath Clark Lectures. ‘The epidemiologic fabric’. I - Weaving the threads. International Journal of Epidemiology 1980, 9: 199-206. ‘Returns of vital statistics, full and accurate, are indispensable, they are the very foundations of sanitary science and practice.’ - H W Rumsey, 1869, in testimony before the Royal Sanitary Commission.
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