DOI: 10.1055/s-00000094

Zeitschrift für Gastroenterologie

References

Winawer SJ, Flehinger BJ, Schottenfeld D. et al.
Screening for colorectal cancer with fecal occult blood testing and sigmoidoscopy. 
J Natl Cancer Inst 1993; 85: 1311-1318  

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