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Contributors CJR and WH cowrote, edited and approved the final manuscript.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests CJR and WH voted in the 92 member Delphi process linked to the BSG guidance but had no role in writing or forming the guidance. CJR has received grant funding from ARC medical, Norgine, Medtronic, 3D Matrix solutions and Olympus medical. He was an expert witness for ARC and Olympus medical. WH was clinical lead for NICE’s Suspected cancer: recognition and referral (NG12).
Provenance and peer review Commissioned; internally peer reviewed.