Hsu Jason, Forbes Brian, Maguire Albert M
Scheie Eye Institute, Department of Ophthalmology, University of Pennsylvania, and Department of Ophthalmology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA.
Retina. 2006 Sep;26(7):831-3. doi: 10.1097/01.iae.0000244271.06266.7c.