[1] Royal Exeter Univ Healthcare NHS Fdn Trust, Colorectal Surg, Exeter, England
[2] Univ Exeter, Natl Inst Hlth & Care Res NIHR Appl Res Collaborat, South West Peninsula PenARC, Med Sch, Exeter, England
[3] Univ Exeter, Coll Med & Hlth, Med Sch, Exeter, England
[4] Univ Bern, Inst Primary Hlth Care BIHAM, Bern, Switzerland
[5] Univ Exeter, Dept Publ Hlth & Sports Sci, Publ Hlth Econ Grp, Med Sch, Exeter, England
[6] Univ Plymouth, Sch Law & Criminol, Plymouth, England
[7] Univ Hosp Plymouth NHS Trust, Anaesthesia, Plymouth, England
[8] Univ Exeter, Dept Hlth & Community Sci, Med Sch, Exeter, England
[9] Care Qual Commiss, Hlth Policy, London, England
[10] Univ Plymouth, Fac Med & Dent, Plymouth, England