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Hinnen, P., F W M de Rooij, E M. Terlouw, A. Edixhoven, H van Dekken, R van Hillegersberg, H W. Tilanus, J H P. Wilson, i P D. Siersema. Porphyrin Biosynthesis in Human Barrett's Oesophagus and Adenocarcinoma After Ingestion of 5-aminolaevulinic Acid. Nature Publishing Group, 2000.

Hinnen, P., et al. Porphyrin Biosynthesis in Human Barrett's Oesophagus and Adenocarcinoma After Ingestion of 5-aminolaevulinic Acid. Nature Publishing Group, 2000.