title: Salvage photodynamic therapy by using porfimer sodium after chemoradiation therapy: a Western viewpoint.
authors.forename: Herbert C
authors.initials: HC
authors.lastname: Wolfsen
mesh_terms: D003131:Combined Modality Therapy; D017323:Dihematoporphyrin Ether / Q000627:therapeutic use*; D004938:Esophageal Neoplasms / Q000628:therapy*; D006801:Humans; D010778:Photochemotherapy / Q000379:methods*; D016879:Salvage Therapy
chemical_list: D017323:Dihematoporphyrin Ether