About the Authors

Joanne Parsons

Contributed equally to this work with: Joanne Parsons, Abi Eccles, Sarah Hillman

Roles Conceptualization, Formal analysis, Funding acquisition, Investigation, Methodology, Validation, Visualization, Writing – original draft, Writing – review & editing

jo.parsons@warwick.ac.uk

Affiliation Unit of Academic Primary Care, Warwick Medical School, University of Warwick, Coventry, United Kingdom

Abi Eccles

Contributed equally to this work with: Joanne Parsons, Abi Eccles, Sarah Hillman

Roles Conceptualization, Formal analysis, Funding acquisition, Investigation, Methodology, Validation, Visualization, Writing – review & editing

Affiliation Unit of Academic Primary Care, Warwick Medical School, University of Warwick, Coventry, United Kingdom

Debra Bick

Roles Conceptualization, Formal analysis, Funding acquisition, Investigation, Methodology, Supervision, Writing – review & editing

‡ DB, MRBK and JC also contributed equally to this work.

Affiliation Warwick Clinical Trials Unit, University of Warwick, Coventry, United Kingdom

Michael R. B. Keighley

Roles Conceptualization, Funding acquisition, Resources, Supervision, Validation, Writing – review & editing

‡ DB, MRBK and JC also contributed equally to this work.

Affiliation The MASIC Foundation, Nottingham, United Kingdom

Anna Clements

Roles Conceptualization, Project administration, Resources, Writing – review & editing

Affiliation The MASIC Foundation, Nottingham, United Kingdom

Julie Cornish

Roles Conceptualization, Funding acquisition, Resources, Writing – review & editing

‡ DB, MRBK and JC also contributed equally to this work.

Affiliation Department Colorectal Surgery, Cardiff and Vale University Health Board, Cardiff, United Kingdom

Sarah Embleton

Roles Conceptualization, Funding acquisition, Resources, Writing – review & editing

Affiliation The MASIC Foundation, Nottingham, United Kingdom

Abigail McNiven

Roles Conceptualization, Funding acquisition, Resources, Visualization, Writing – review & editing

Affiliation Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom

Kate Seers

Roles Conceptualization, Formal analysis, Funding acquisition, Methodology, Supervision, Writing – review & editing

Affiliation Warwick Research in Nursing, Warwick Medical School, University of Warwick, Coventry, United Kingdom

Sarah Hillman

Contributed equally to this work with: Joanne Parsons, Abi Eccles, Sarah Hillman

Roles Conceptualization, Formal analysis, Funding acquisition, Methodology, Resources, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

Affiliation Unit of Academic Primary Care, Warwick Medical School, University of Warwick, Coventry, United Kingdom

Competing Interests

I have read the Journal’s policy and the authors of this manuscript have the following competing interests: Professor Michael Keighley is Trustee and President of the MASIC Foundation but this has not impacted on conduct of study or publication, CEO of Keighleycolo Ltd involved with medical reports for court in which OASI patients have been seen but no conflict as this simply informed me of the consequences of the injury during one to one face to face consultations. Trustee Friends of Vellore UK also has helped to understand impact of OASI in the Asian community in India. Joint holder of two i4i NIHR grants for a device for the treatment of fistula in fact of value to some OASI patients. This does not alter our adherence to PLOS ONE policies on sharing data and materials.