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Barrett's Esophagus
Esophageal Neoplasms
Adenocarcinoma
Gastroesophageal Reflux
Esophageal Motility Disorders
Photochemotherapy
Esophagoscopy
Digestive System Endoscopy
Endosonography
Gastrointestinal Endoscopy
Dihematoporphyrin Ether
Antineoplastic Agents
Mucous Membranes
Esophagus
Upper Gastrointestinal Tract
Severity of Illness Index
Prospective Studies
Precancerous Conditions
Cohort Studies
Treatment Outcome
Co-Publications
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