Browning A C, Amoaku W M, Vernon S A, Morgan J, Thirkill C E
Department of Ophthalmology and Visual Sciences, Eye, Ear, Nose and Throat Centre, University Hospital, Queen's Medical Centre, Nottingham NG7 2UH, UK.
Lancet. 2004 Apr 17;363(9417):1305. doi: 10.1016/S0140-6736(04)16005-4.