Annals of Epidemiology
Volume 17, Issue 5, Supplement , Pages A2-A3, May 2007

Table of Contents

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PII: S1047-2797(07)00114-7

doi:10.1016/S1047-2797(07)00114-7

Annals of Epidemiology
Volume 17, Issue 5, Supplement , Pages A2-A3, May 2007