- Correspondence to:
Dr G Kristjánsson
Department of Medical Sciences, Uppsala University, Department of Gastroenterology, Uppsala University Hospital, 75185 Uppsala, Sweden;
- Accepted February 1, 2005
- Revised January 27, 2005
- First published May 11, 2005.
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Three of the authors have stocks in Alimenta Diagnostics AB, Uppsala, Sweden and Pfizer.
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