1. Oftalmosanitas—Clínica Colsanitas (Colsanitas Clinic), Bogotá, Colombia.
2. Member of Vision Colombia Research Group, Bogota, Colombia.
3. Clínica de Oftalmología San Diego (San Diego Ophthalmology Clinic), Medellín, Colombia.
4. Ophthalmic Private Practice, Falls Church, Virginia, USA.
5. Research Unit, Fundación Universitaria Sanitas (Unisanitas University), Bogotá, Colombia.