title: Contribution of topical tar oil to ultraviolet B phototherapy for psoriasis.
mesh_terms: D000287:Administration, Topical; D004307:Dose-Response Relationship, Radiation; D006801:Humans; D011565:Psoriasis / Q000628:therapy*; D013638:Tars / Q000008:administration & dosage / Q000494:pharmacology*; D014467:Ultraviolet Therapy
chemical_list: D013638:Tars