_:vb50944542 . _:vb50944542 . _:vb50944542 . _:vb50944542 . _:vb50944542 "url:https://www.ncbi.nlm.nih.gov/pubmed/8841203"^^ . _:vb50944542 "A psoriasis that has_material_basis_in variation in a region on chromosome 4q."^^ . _:vb50944542 .