title: Photodynamic therapy strictures: who is at risk?
authors.forename: Bergein F
authors.initials: BF
authors.lastname: Overholt
mesh_terms: D001471:Barrett Esophagus / Q000188:drug therapy* / Q000473:pathology; D004106:Dilatation; D004940:Esophageal Stenosis / Q000139:chemically induced / Q000453:epidemiology* / Q000628:therapy; D006801:Humans; D009092:Mucous Membrane / Q000601:surgery; D010778:Photochemotherapy / Q000009:adverse effects*; D019233:Retreatment; D018570:Risk Assessment; D012307:Risk Factors