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Letter
Authors' response
- Correspondence to Charles H Knowles, Neurogastroenterology Group, Centre for digestive diseases, Institute of Cellular and Molecular Science, Barts and the London, Queen Mary's School of Medicine and Dentistry, London E1 2AN, UK; c.h.knowles{at}qmul.ac.uk
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Publication history
- First published September 20, 2010.
Online issue publication
September 05, 2011
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© 2011, Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.