In the December supplement Gut 2001;49 (suppl IV):iv11–iv21) Dr Ysebaert's address should be Department of Surgery, University Hospital Antwerp (UZA), Wilrijkstraat 10, B-2650 Edegem, Belgium. The authors apologise for the error.

The description of the February cover figure was incorrect. The correct legend should have read “Intimin gamma complemented ICC170(pICC55) adhering to follicle associated epithelium”. Gut would like to apologise for this error.