- Dr R A Fisher, Gestational Trophoblastic Disease Group, Institute of Reproductive and Developmental Biology, Imperial College London, Hammersmith Campus, Du Cane Road, London W12 0NN, UK;
- Received October 23, 2008
- Revised December 22, 2008
- Accepted January 20, 2009
- First published February 25, 2009.
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