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The ideas and opinions expressed in Clinical Gastroen-terology and Hepatology do not necessarily reflect those of theAmerican Gastroenterological Association, the Editor, or thePublisher. Publication of an advertisement or other productmention in Clinical Gastroenterology and Hepatology should notbe construed as an endorsement of the product or the manu-facturer’s claims. Readers are encouraged to contact the man-ufacturer with any questions about the features or limitationsof the products mentioned. Neither the American Gastroen-terological Association nor the Publisher assumes any respon-sibility for any injury and/or damage to persons or propertyarising out of or related to any use of the material contained inthis periodical. The reader is advised to check the appropriatemedical literature and the product information currently pro-vided by the manufacturer of each drug to be administered toverify the dosage, the method and duration of administration,or contraindications. It is the responsibility of the treatingphysician or other health care professional, relying on inde-pendent experience and knowledge of the patient, to determinedrug dosages and the best treatment for the patient.

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