1. From the Nuffield Laboratory of Ophthalmology, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom;
2. The Second Hospital of Jilin University, Changchun, China;
3. Departmento de Fisiologia e Farmacologia, Cidade Universita´ria, Recife, PE, Brazil; and
4. Pfizer, Translation Medicine in Ophthalmology, San Diego, California.