American Journal of Epidemiology Advance Access published online on June 22, 2006
American Journal of Epidemiology, doi:10.1093/aje/kwj207
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1 From the Departments of Environmental Health and Epidemiology, Harvard School of Public Health, Boston, MA
* To whom correspondence should be addressed.
Received February 16, 2006
Accepted February 28, 2006
INVITED COMMENTARY
Invited Commentary: Ripeness Is All
Joel Schwartz 1 *
Joel Schwartz, E-mail: joel15{at}hsph.harvard.edu
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