1. Cancer of the esophagus;Aida,1983
2. Effects of laser irradiation on hematoporphyrintreated normal and transformed thyroid cells in culture;Andreoni;Cancer Res.,1983
3. Fluorescence bronchoscopy for localizing early bronchial cancer and carcinoma in situ;Balchum;Recent Results Cancer Res.,1982
4. Photoradiation therapy of endobronchial lung cancer using the photodynamic action of hematoporphyrin derivative;Balchum;Lasers Surg. Med.,1984
5. Balchum, O.: Unpublished results, 1983.