_:vb50940875 . _:vb50940875 . _:vb50940875 . _:vb50940875 . _:vb50940875 "An orofacial cleft that has_material_basis_in variation in the chromosomal region 19q13."^^ . _:vb50940875 "url:https://www.ncbi.nlm.nih.gov/pubmed/7668251"^^ . _:vb50940875 .