Letter to the Editor from Ahrens and Schisterman

Authors


Correspondence:

Katherine Ahrens, Division of Epidemiology, Statistics and Prevention Research, NICHD/NIH/DHHS, 6100 Building, Room 7B05, Rockville, MD 20892-7510, USA.

E-mail: katherine.ahrens@nih.gov

No abstract is available for this article.

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