1. Cancer statistics, 1995;Wingo;CA Cancer J Clin,1995
2. Esophageal cancer trends and risk factors;Blot;Semin Oncol,1994
3. Esophageal carcinoma: improved quality of survival with resection;Bluett;Ann Surg,1987
4. Three decades of treatment of esophageal squamous carcinoma at the Massachusetts General Hospital;Katlick;J Thorac Cardiovasc Surg,1990
5. Photodynamic therapy for obstructing esophageal tumors: efficacy, safety, light dosimetry and results of an on-going randomized trial [abstract];Heier;Gastrointest Endosc,1991