_:vb50944543 . _:vb50944543 . _:vb50944543 . _:vb50944543 "A psoriasis that has_material_basis_in variation in a region on chromosome 4q31-q34."^^ . _:vb50944543 . _:vb50944543 "url:https://www.ncbi.nlm.nih.gov/pubmed/12485440"^^ . _:vb50944543 .