DOI: 10.1055/s-00000013

Endoskopie heute

References

Thiis-Evensen E, Hoff GS, Sauar J. et al
Flexible sigmoidoscopy or colonoscopy as a screening modality for colorectal adenomas in older age groups? Findings in a cohort of the normal population aged 63–72 years. 
Gut 1999; 45: 834-839  

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