1. Department of Ophthalmology, Royal Perth Hospital, Perth, Western Australia, Australia.
2. School of Pathology and Laboratory Medicine, University of Western Australia, Perth, Australia.
3. Department of Microbiology, PathWest Laboratory Medicine, Fiona Stanley Hospital, Perth, Western Australia, Australia.
4. Department of Infectious Diseases and Microbiology, Royal Perth Hospital, Perth, Western Australia, Australia.
5. Centre for Ophthalmology and Visual Science (incorporating Lions Eye Institute), The University of Western Australia, Perth, Western Australia, Australia.
6. Department of Ophthalmology, Perth Children's Hospital, Perth, Western Australia, Australia.