title: Authors' reply to Doherty and Hawkins.
authors.affiliation: Department of Medicine, Sorlandet Hospital Kristiansand, Kristiansand, Norway.|Clinical Effectiveness Research Group, Institute of Health and Society, University of Oslo, Oslo, Norway.
authors.forename: Øyvind
authors.initials: Ø
authors.lastname: Holme
authors.affiliation: Clinical Effectiveness Research Group, Institute of Health and Society, University of Oslo, Oslo, Norway.|Department of Transplantation Medicine and KG Jebsen Center for Colorectal Cancer Research, Oslo University Hospital, Oslo, Norway.
authors.forename: Magnus
authors.initials: M
authors.lastname: Løberg
authors.affiliation: Department of Medicine, Sorlandet Hospital Kristiansand, Kristiansand, Norway.|Clinical Effectiveness Research Group, Institute of Health and Society, University of Oslo, Oslo, Norway.|Department of Transplantation Medicine and KG Jebsen Center for Colorectal Cancer Research, Oslo University Hospital, Oslo, Norway.
authors.forename: Michael
authors.initials: M
authors.lastname: Bretthauer
authors.affiliation: Clinical Effectiveness Research Group, Institute of Health and Society, University of Oslo, Oslo, Norway.|Department of Transplantation Medicine and KG Jebsen Center for Colorectal Cancer Research, Oslo University Hospital, Oslo, Norway.
authors.forename: Mette
authors.initials: M
authors.lastname: Kalager