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3. The contrasting mechanisms of colonic collagen damage between photodynamic therapy and thermal injury;Barr, H.; Tralau, C.J.; Boulos, P.B.; MacRobert, A.J.; Tilly, R.; Bown, S.G.;Photochem Photobiol,1987
4. Photodynamic therapy for treatment of early adenocarcinoma in Barrett's esophagus;Overholt, B.; Panjehpour, M.; Tefftellar, E.; Rose, M.;Gastrointest Endosc,1993
5. Complications of whole bladder dihaematoporphyrin ether photodynamic therapy;Harty, J.I.; Amin, M.; Wieman, T.J.; Tseng, M.T.; Ackerman, D.; Broghamer, W.;Jf Urol,1989