DOI: 10.1055/s-00000058

Planta Medica

References

Brostrom O, Lofberg R, Nordenvall B, Ost A, Hellers G.
The risk of colorectal cancer in ulcerative colitis. An epidemiologic study. 
Scand J Gastroenterol 1987; 22: 1193-9  

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