_:vb50942984 . _:vb50942984 . _:vb50942984 "url:https://www.ncbi.nlm.nih.gov/pubmed/11381043"^^ . _:vb50942984 "A retinitis pigmentosa that has_material_basis_in variation in the chromosome region 4q32-q34."^^ . _:vb50942984 . _:vb50942984 . _:vb50942984 .