1. Bernard and Shirlee Brown Glaucoma Research Laboratory, Edward S. Harkness Eye Institute, Columbia University Medical Center, New York, New York
2. Glaucoma Research Center, Montchoisi Clinic, Swiss Vision Network, Lausanne, Switzerland
3. Department of Ophthalmology, University of Colorado, Denver, Colorado
4. Einhorn Clinical Research Center, New York Eye and Ear Infirmary of Mount Sinai, New York, New York