title: Response to Crocetti et al.
authors.affiliation: Section of Gastroenterology, ICAMS, University of Glasgow, Glasgow, UK.
authors.forename: Mohammad H
authors.initials: MH
authors.lastname: Derakhshan
authors.affiliation: Section of Cancer Surveillance, International Agency for Research on Cancer, Lyon, France.
authors.forename: Melina
authors.initials: M
authors.lastname: Arnold
authors.affiliation: Scottish Cancer Registry, NHS Scotland, Edinburgh, UK.
authors.forename: David H
authors.initials: DH
authors.lastname: Brewster
authors.affiliation: Institute of Cancer Sciences, University of Glasgow, Glasgow, UK.
authors.forename: James J
authors.initials: JJ
authors.lastname: Going
authors.affiliation: Section of Gastroenterology, ICAMS, University of Glasgow, Glasgow, UK.
authors.forename: David R
authors.initials: DR
authors.lastname: Mitchell
authors.affiliation: Section of Cancer Surveillance, International Agency for Research on Cancer, Lyon, France.
authors.forename: David
authors.initials: D
authors.lastname: Forman
authors.affiliation: Section of Gastroenterology, ICAMS, University of Glasgow, Glasgow, UK.
authors.forename: Kenneth E L
authors.initials: KE
authors.lastname: McColl