1. Ileal-lymphoid-nodular hyperplasia, non-specific colitis, and pervasive development disorder in children;Wakefield;Lancet,1997
2. Autism and associated medical disorders in a large French epidemiological sample;Fombonne;Am Acad Child Adoles Psychiat,1997
3. Incidence and prevalence of inflammatory bowel disease in children in South-Western Sweden;Hildebrand;Acta Paediatrica,1994
4. The epidemiology of paediatric inflammatory bowel disease;Cosgrove;Arch Dis Child,1996
5. Epidemiological surveys of infantile autism;Fombonne,1998