- Correspondence to: L Lewis Wall MD, DPhil, Department of Obstetrics and Gynecology, Washington University School of Medicine, Campus Box 8064, 660 South Euclid Avenue, St Louis, MO 63110, USA;
- Received April 20, 2005
- Accepted August 30, 2005
- Revised August 8, 2005
- First published May 26, 2006.
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