[1] Univ Auckland, Dept Ophthalmol, Auckland 1, New Zealand
[2] Univ Otago, Dept Pathol, Dunedin, New Zealand
[3] Univ Auckland, Dept Mol Med & Pathol, Auckland 1, New Zealand
[4] Univ Western Australia, Lion Eye Inst, Ctr Ophthalmol & Visual Sci, Perth, WA 6009, Australia
[5] Univ Melbourne, Ctr Eye Res Australia, Melbourne, Vic, Australia
[6] Univ Liverpool, Inst Ageing & Chron Dis, Dept Eye & Vis Sci, Liverpool L69 3BX, Merseyside, England
[7] Auckland Dist Hlth Board, Greenlane Clin Ctr, Eye Dept, Auckland, New Zealand