1. Department of Anatomy, University of Otago, Dunedin, New Zealand
2. Biostatistics Centre, University of Otago, Dunedin, New Zealand
3. Department of Medicine, University of Otago Christchurch, Christchurch, New Zealand
4. Department of Psychology and Discipline of Oncology, Memorial University, St. John’s, Newfoundland, Canada
5. Department of Sleep Physiology, Sleep Well Clinic, Christchurch, New Zealand