1. Bernard and Shirlee Brown Glaucoma Research Laboratory, Department of Ophthalmology, Columbia University Irving Medical Center, New York, New York
2. Howard Hughes Medical Institute, Chevy Chase, Maryland
3. Zuckerman Mind Brain Behavior Institute, Columbia University, New York, New York
4. Division of Eye and Vision, Department of Clinical Neuroscience, St Erik Eye Hospital, Karolinska Institutet, Stockholm, Sweden