About the Authors

Peter C. Elwood

Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Supervision, Writing – original draft

ElwoodPC@cf.ac.uk

Affiliation Cochrane Institute of Primary Care and Public Health, Cardiff University, Cardiff, United Kingdom

Janet E. Pickering

Roles Formal analysis, Validation, Writing – original draft, Writing – review & editing

Affiliations Cochrane Institute of Primary Care and Public Health, Cardiff University, Cardiff, United Kingdom, Institute of Food, Nutrition and Health, University of Reading, Reading, United Kingdom

Gareth Morgan

Roles Conceptualization, Formal analysis, Methodology, Writing – original draft, Writing – review & editing

Affiliation Hywel Dda University Health Board, Llanelli, United Kingdom

Julieta Galante

Roles Conceptualization, Formal analysis, Methodology, Writing – review & editing

Affiliation Department of Psychiatry, University of Cambridge, Cambridge, United Kingdom

Alison L. Weightman

Roles Conceptualization, Formal analysis, Methodology, Writing – review & editing

Affiliation Specialist Unit for Review Evidence, Cardiff University, Cardiff, United Kingdom

Delyth Morris

Roles Methodology

Affiliation Specialist Unit for Review Evidence, Cardiff University, Cardiff, United Kingdom

Marcus Longley

Roles Conceptualization, Methodology, Writing – original draft

Affiliation Health Policy, University of South Wales, Pontypridd, United Kingdom

Malcolm Mason

Roles Conceptualization, Validation, Writing – review & editing

Affiliation Division of Cancer and Genetics, School of Medicine, Cardiff University, Cardiff, United Kingdom

Richard Adams

Roles Conceptualization, Validation, Writing – review & editing

Affiliation Institute of Cancer & Genetics Cardiff University, Cardiff, United Kingdom

Sunil Dolwani

Roles Conceptualization, Validation, Writing – original draft, Writing – review & editing

Affiliation Division of Population Medicine, School of Medicine, Cardiff University, Cardiff, United Kingdom

John Chia W. K.

Roles Conceptualization, Methodology, Validation, Writing – original draft, Writing – review & editing

Affiliation Division of Medical Oncology, National Cancer Centre, Singapore, Singapore

Angel Lanas

Roles Conceptualization, Methodology, Validation, Writing – original draft, Writing – review & editing

Affiliation University of Zaragoza, IIS Aragón, CIBERehd, Zaragoza, Spain

Competing Interests

We have the following interests. PE was a member of the International Aspirin Foundation until Sept 2015. He had received occasional expenses from Bayer for attendance at Conferences organised by the Foundation, but nothing in recent years. MM received personal payments for advisory boards: Sanofi, Bayer, Takeda Lecture fees: Bayer, Janssen, Sanofi. JC: Ownership of Stocks - QuantumDx, Biomark, AstraZeneca, Roche Holdings, Pfizer, Bristol-MeyerSquibb, SeattleGenetics, Natera, Nektar, Spark Therapeutics, Biocept, Nanostring Technologies, Incyte 2. Consultancy/ Paid employment - Tessa Therapeutics 3. Research grants - BMS (drug supply for Investigator Trial) - Bayer (drug supply – Aspirin, for Investigator Trial) - Oncoquest (drug supply – Oregovomab, for Investigator Trial, and study expenses) 4. Travel Grants - AstraZeneca, Bristol Meyer Squibb, MSD 5. Travel grants and honoraria for speaking or participation at meetings - AstraZeneca (speakership). Membership in a government or other advisory board o Board member, Singapore Gynaecologic Oncology Group Council member, College of Clinician Scientist Singapore Scientific advisory board, Aspirin Foundation. AL is n advisor to Bayer A.G. There are no patents, products in development or marketed products to declare. This does not alter our adherence to all the PLOS ONE policies on sharing data and materials, as detailed online in the guide for authors.