RT Journal Article SR Electronic T1 Incidence of paediatric inflammatory bowel disease in South Wales JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 344 OP 345 DO 10.1136/adc.2004.067413 VO 91 IS 4 A1 M Ahmed A1 I H Davies A1 K Hood A1 H R Jenkins YR 2006 UL http://adc.bmj.com/content/91/4/344.abstract AB