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Verne, Julia E C W., Roger Aubrey, Sharon B. Love, Ian C. Talbot, and John M A. Northover. "Population Based Randomised Study of Uptake and Yield of Screening By Flexible Sigmoidoscopy Compared With Screening By Faecal Occult Blood Testing." BMJ 1998.

Verne, Julia E C W., et al. "Population Based Randomised Study of Uptake and Yield of Screening By Flexible Sigmoidoscopy Compared With Screening By Faecal Occult Blood Testing." BMJ 1998.