Randomized controlled trial: Flexible sigmoidoscopy as an adjunct to faecal occult blood testing in population screening

Robert J.C. Steele^*, Francis A. Carey, Greig Stanners, Jaroslaw Lang, Jess Brand, Linda A. Brownlee, Emilia M. Crichton, Jack W. Winter, Perminder S. Phull, Craig Mowat, Judith A. Strachan, Ann Marie Digan, Callum G. Fraser