H W Tilanus

5-Aminolaevulinic acid-induced protoporphyrin IX accumulation in tissues: pharmacokinetics after oral or intravenous administration.

A B Houtsmuller, R. van Hillegersberg, P. Siersema, 1998, Journal of photochemistry and photobiology. B, Biology.

Timing of illumination is essential for effective and safe photodynamic therapy: a study in the normal rat oesophagus

P. Siersema, H. J. V. Staveren, H. Tilanus, 1999, British Journal of Cancer.