1. Northeastern State University Oklahoma College of Optometry, Tahlequah, OK, USA
2. Cockrell Eye Centers, Stillwater, OK, USA
3. Alberta Association of Optometrists, Edmonton, AB, USA
4. School of Optometry and Vision Sciences, Cardiff University, Cardiff, UK
5. Optometry Department, Moorfields Eye Hospital, London, UK
6. Department of Optometry, University of Western Australia, Perth, Australia