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Correspondence: Jessica B Spencer, Division of Reproductive Endocrinology & Infertility, Department of Gynecology & Obstetrics, Emory University School of Medicine, Atlanta, GA; Email: jbspenc@emory.edu
Authors' Contributions: JBS developed study design, analyzed data, statistical methods, and drafted the manuscript.
ABS analyzed data, performed statistical analysis and reviewed the manuscript.
SDC assembled the raw database, provided critical review and expertise.
DRS developed hypothesis, study design and reviewed manuscript.
All authors read and approved the final manuscript.
Disclosures: JBS, ASB and DRS declare they have no competing interests.
SDC serves on the Future Fertility Leaders Advisory Board Meeting for Merck & Co., Inc.
©2010 Spencer et al; licensee BioMed Central Ltd.