1. Princeton University, Princeton, NJ 08544, U.S.A. cdg4@alumni.princeton.edu
2. University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA 19104, U.S.A. scholl.ben@gmail.com
3. University of California, Berkeley, School of Optometry, Berkeley, CA 94720, U.S.A. yates@berkeley.edu
4. Princeton University, Princeton, NJ 08544, U.S.A. pillow@princeton.edu