1. Bond University; Centre for Research in Evidence-Based Practice (CREBP); 14 University Drive Gold Coast Queensland Australia 4229
2. Lundby Hospital; ENT Department; Wieselgrensplatesen 2A Goteborg Sweden 41717
3. Griffith University and Departments of Infectious Diseases and Paediatrics, Gold Coast Health; School of Medicine and Menzies Health Institute Queensland; Gold Coast Queensland Australia
4. Aldermoor Health Centre, University of Southampton; Primary Care and Population Sciences, Faculty of Medicine; Aldermoor Close Southampton UK S016 5ST