Publisher's Correction
Please note that there is an error in the reference list, number 38 should read:
Wehkamp J , Harder J, Weichenthal M, et al. NOD2 (CARD15) mutations in Crohns disease are associated with diminished mucosal -defensin expression. Gut 2004;53:1658-64. [Abstract/Free] [Full Text]
The error is much regretted.