1. Division of Orbital and Ophthalmic Plastic Surgery, Jules Stein Eye Institute, University of California, Los Angeles, California, U.S.A.
2. South Australian Institute of Ophthalmology, The University of Adelaide and The Royal Adelaide Hospital, Adelaide, South Australia, Australia
3. Orbital Plastics and Lacrimal Unit, Royal Victorian Eye and Ear Hospital, Melbourne, Victoria, Australia
4. Department of Radiology, University of California, Los Angeles, California, U.S.A.
5. Department of Medical Imaging, St Vincent’s Hospital Melbourne, Fitzroy, Victoria, Australia
6. Department of Statistics
7. Department of Pathology, University of California, Los Angeles, California, U.S.A.