Appendicitis epidemic following introduction of piped water to Anglesey.D J Barker, Rob Oliver, Shirley Simmonds et al.|Journal of Epidemiology & Community Health|1988Cited by 24
A case-control study of acute appendicitis and diet in children.M. Benjamin Nelson, Shirley Simmonds, J.A. Morris et al.|Journal of Epidemiology & Community Health|1986Cited by 21