© The Author 2005. Published by Oxford University Press on behalf of the European Society of Human Reproduction and Embryology. All rights reserved.
Reply: Do drugs that stimulate ovulation increase the risk for endometrial stromal sarcoma?
1 National Cancer Institute, Bethesda, MD, 2 University of Illinois, Chicago, IL, 3 Wayne State University, Detroit, MI, 4 Columbia University, New York, NY, 5 Georgetown University, Washington, DC 6 Stanford University, Stanford, CA, USA
7 To whom correspondence should be addressed. Email: Brinton@nih.gov
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Sir,
Reich and Regauer (2004) have made an intriguing observation regarding a preponderance of histories of in vitro fertilization among patients developing endometrial stromal sarcomas (ESS). Although the absence of information as to how long these patients were followed or what types and dosages of drugs they received limits the extent to which a biological connection