1 NIHR Nottingham Biomedical Research Centre, Hearing Sciences, Division of Clinical Neuroscience, School of Medicine, University of Nottingham, NG1 5DU, UK.
2 Hyperacusis Support and Research Facebook group, London, UK.
3 James Lind Alliance, National Institute for Health Research Evaluation, Trials and Studies Coordinating Centre, Southampton, UK.
4 NIHR Nottingham Biomedical Research Centre, Hearing Sciences, Division of Clinical Neuroscience, School of Medicine, University of Nottingham, NG1 5DU, UK. Electronic address: derek.hoare@nottingham.ac.uk.