1. Department of Ophthalmology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
2. Doheny Eye Institute, Los Angeles, CA, USA
3. Department of Ophthalmology, Oftlamo-Sanitas Eye Institute, School of Medicine, Fundación Universitaria Sanitas, Bogotá, Colombia
4. Department of Ophthalmology, Hospital Universitario San Ignacio, Pontificia Universidad Javeriana, Bogotá, Colombia
5. University of Iowa, Department of Ophthalmology and Visual Sciences, Iowa City, IA, USA
6. Department of Ophthalmology, University of Ottawa, Ottawa, Ontario, Canada
7. Ottawa Hospital Research Institute, Ottawa, Ontario, Canada