1. The epidemiology of appendicitis and appendectomy in the United States;DG Addiss;American Journal of Epidemiology,1990
2. Epidemiologic features of acute appendicitis in Ontario, Canada;M Al-Omran;Canadian journal of surgery Journal canadien de chirurgie,2003
3. The burden of appendicitis-related hospitalizations in the United States in 1997;GM Davies;Surg Infect (Larchmt),2004
4. "Can perforating appendicitis be considered a separate disease entity"?;R Andersson;The European journal of surgery = Acta chirurgica,1999
5. Indications for operation in suspected appendicitis and incidence of perforation;R Andersson;Bmj,1994