Media type: Electronic Conference Proceeding Title: Endoscopic fluorescence of gastrointestinal neoplasia after sensitization with 5-aminolaevulinic acid (ALA) or Photofrin Contributor: Messmann, Helmut; Mlkvy, Peter; Montan, Sune; Wang-Nordman, Ingrid; Nilsson, Annika M.; Svanberg, Katarina; Svanberg, Sune; MacRobert, Alexander J.; Bown, Stephen G. Published: SPIE, 1994 Published in: SPIE Proceedings, 2371 (1994), Seite 506-509 Extent: 506-509 Language: Without Specification DOI: 10.1117/12.203402 ISSN: 0277-786X Origination: Footnote: