Mayercik Vera A, Eller Andrew W, Pihlblad Matthew S
Department of Ophthalmology, University of Pittsburgh Medical Center Eye Center, Eye and Ear Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA.
Arch Ophthalmol. 2011 Jul;129(7):952-3. doi: 10.1001/archophthalmol.2011.184.