1. Sydney Facial Nerve Service, Chris O’Brien Lifehouse, Sydney, Australia
2. Department of Medicine, University of New South Wales, Sydney, Australia
3. Faculty of Medicine and Health, Macquarie University, Sydney, Australia
4. Head and Neck Department, Chris O’Brien Lifehouse, Sydney, Australia
5. School of Physiotherapy, and
6. Sydney Medical School, The University of Sydney, Sydney, Australia