title: Once-only flexible sigmoidoscopy screening for adults aged 55-64 years old reduces the incidence of colorectal cancer and colorectal cancer deaths.
authors.affiliation: Division of Surgery, Department of Clinical Science, Intervention and Technology, Karolinska Institutet at Karolinska University Hospital, Stockholm, Sweden. johannes.blom@ki.se
authors.forename: Johannes
authors.initials: J
authors.lastname: Blom