About the Authors

Carol Fawkes

Roles Conceptualization, Formal analysis, Methodology, Writing – original draft

c.fawkes@qmul.ac.uk

Affiliation Institute of Population Health Sciences, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom

Dawn Carnes

Roles Supervision, Writing – review & editing

Affiliations Institute of Population Health Sciences, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom, University College of Osteopathy, London, United Kingdom

Competing Interests

Carol Fawkes is employed as Senior Research Officer at the National Council for Osteopathic Research (NCOR) and Dawn Carnes is Director of NCOR. This does not alter our adherence to PLOS ONE policies on sharing data and materials.