- Correspondence to Professor Dr Hans F A Vasen, Dutch Hereditary Cancer Registry & Department of Gastroenterology, Leiden University Medical Centre, Rijnsburgerweg 10, Leiden 2333 AA, The Netherlands;
- Received December 17, 2012
- Revised January 15, 2013
- Accepted January 16, 2013
- First published February 13, 2013.
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