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5. Survey of 336 deaf students for retinitis pigmentosa. Isaeff WB, Niswonger J. Ann Ophthalmol; 1981 Oct; 13(10):1131-2. PubMed ID: 7316337 [Abstract] [Full Text] [Related]
16. Case report of Usher's syndrome in two sisters--first reported case in Singapore. Chuah G, Quah BL, Chuah CT, Balakrishnan A. Singapore Med J; 1998 Jan; 39(1):27-9. PubMed ID: 9557101 [Abstract] [Full Text] [Related]