Principles of Clinical Gastroenterology
PII: S0016-5085(09)01502-9
doi:10.1053/j.gastro.2009.08.036
© 2009 AGA Institute. Published by Elsevier Inc. All rights reserved.
PII: S0016-5085(09)01502-9
doi:10.1053/j.gastro.2009.08.036
© 2009 AGA Institute. Published by Elsevier Inc. All rights reserved.