_:vb50940881 . _:vb50940881 . _:vb50940881 . _:vb50940881 . _:vb50940881 "url:https://www.ncbi.nlm.nih.gov/pubmed/16909398"^^ . _:vb50940881 "An orofacial cleft that has_material_basis_in variation in the chromosome region 13q33.1-q34."^^ . _:vb50940881 .