_:vb50944548 . _:vb50944548 "A psoriasis that has_material_basis_in variation in a region on chromosome 18p11.23."^^ . _:vb50944548 "url:https://www.ncbi.nlm.nih.gov/pubmed/14632189"^^ . _:vb50944548 . _:vb50944548 . _:vb50944548 . _:vb50944548 .