1. Julius Center for Health Sciences and Primary Care; University Medical Center Utrecht, Utrecht University; Utrecht Netherlands
2. Department of Mathematics and Statistics; York University; Toronto Canada
3. Cochrane Infectious Diseases Group; Liverpool School of Tropical Medicine; Liverpool UK
4. evidENT, Ear Institute; University College London; London UK
5. Centre for Academic Primary Care, NIHR School for Primary Care Research, Bristol Medical School: Population Health Sciences; University of Bristol; Bristol UK
6. Primary Care and Population Sciences, Faculty of Medicine; Aldermoor Health Centre, University of Southampton; Southampton UK