References
- Nyhlin H, Danielsson Å. Incidence of Crohn's disease in a defined population in northern Sweden, 1974–1981. Scand J Gastroenterol 1986; 21: 1185–1192
- Bergman L, Krause U. The incidence of Crohn's disease in central Sweden. Scand J Gastroenterol 1975; 10: 725–729
- Lee F I, Costello F T. Crohn's disease in Blackpool– incidence and prevalence 1968–80. Gut 1985; 26: 274–278
- Brahme F, Lindstrøm C, Wenckert A. Crohn's disease in a defined population. Gastroenterology 1975; 69: 342–351
- Heller G. Crohn's disease in Stockholm county 1955–1974. Acta Chir Scand 1979; 490(suppl)16–23
- Binder V, Both H, Hansen P K, Hendriksen C. Kreiner S, Torp Pedersen K. Incidence and prevalence of ulcerative colitis and Crohn's disease in the county of Copenhagen 1962–1978. Gastroenterology 1982; 83: 563–568
- Haug K, Schrumpf E, Barstad S, Fluge G, Hal-Vorsen J F, The Study Group of Inflammatory Bowel Disease in Western Norway. Epidemiology of ulcerative colitis in western Norway. Scand J Gastroenterol 1988; 23: 517–522
- Olafsdottir E J, Fluge G, Haug K. Chronic inflammatory bowel disease in children in Western Norway. J Pediatr Gastroenterol Nutr 1989; 8: 454–458
- Devlin H B, Datta D, Dellipiani A W. The incidence and prevalence of inflammatory bowel disease in North Tees Health District. World J Surg 1980; 4: 183–193
- Calkins B M, Mendeloff A I. Epidemiology of inflammatory bowel disease. Epidemiol Rev 1986; 8: 60–91
- Skarstein A, Arnesjø B, Burhol P, et al. The incidence of ulcerative colitis and Crohn's disease in an urban population [Abstract]. Scand J Gastroenterol 1982; 17(suppl 78)349
- Sonnenberg A. Geographic variation in the incidence of and mortality from inflammatory bowel disease. Dis Colon Rectum 1986; 29: 854–861
- Mendeloff A I. The epidemiology of inflammatory bowel disease. Clin Gastroenterol 1980; 9: 259–270