Liu David T L, Shields Jerry A, Li C L, Ng H K, Lam Dennis S C
Department of Ophthalmology and Visual Sciences, Chinese University of Hong Kong, Hong Kong, China.
Graefes Arch Clin Exp Ophthalmol. 2011 Dec;249(12):1901-3. doi: 10.1007/s00417-011-1721-x. Epub 2011 Jun 16.