_:vb50940874 . _:vb50940874 . _:vb50940874 . _:vb50940874 "An orofacial cleft that has_material_basis_in variation in the chromosome region 2p13."^^ . _:vb50940874 . _:vb50940874 "url:https://www.ncbi.nlm.nih.gov/pubmed/2570526"^^ . _:vb50940874 .