_:vb50939710 . _:vb50939710 . _:vb50939710 . _:vb50939710 "A schizophrenia that has_material_basis_in a mutation on chromosome 15q13."^^ . _:vb50939710 . _:vb50939710 "url:https://www.ncbi.nlm.nih.gov/pubmed/9012828"^^ . _:vb50939710 .