Vol. 25, No. 6 Printed in Great Britain International Journal of Epidemiology © International Epidemiological Association 1996

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Date: 2011-06-02 14:39:42		Vol. 25, No. 6 Printed in Great Britain International Journal of Epidemiology © International Epidemiological Association 1996 Add to Reading List Source URL: www.epidemiology.ch Download Document from Source Website File Size: 745,75 KB Share Document on Facebook