1. Anterior Segment Department; Instituto de Oftalmología Fundación Conde de Valenciana; Mexico City Mexico
2. Jules Stein Eye Institute, UCLA; Los Angeles California USA
3. Retina and Vitreous Department; Instituto de Oftalmología Fundación Conde de Valenciana; Mexico City Mexico
4. Department of Ophthalmology; University of Colorado Denver - Anschutz Medical Campus; Aurora Colorado USA