[1] Univ Tasmania, Menzies Ctr Populat Hlth Res, Hobart, Tas, Australia
[2] Wake Forest Univ, Dept Biochem, Sch Med, Winston Salem, NC 27157 USA
[3] Univ Zurich, Dept Ophthalmol, Zurich, Switzerland
[4] Univ Melbourne, Ctr Eye Res Australia, Melbourne, Vic, Australia
[5] Great Ormond St Hosp Sick Children, London WC1N 3JH, England
[6] Flinders Univ S Australia, Dept Ophthalmol, Bedford Pk, SA, Australia
[7] Wake Forest Univ, Dept Internal Med, Sch Med, Winston Salem, NC 27109 USA
[8] Wake Forest Univ, Ctr Human Genom, Sch Med, Winston Salem, NC 27157 USA