Regula, J., MacRobert, A. J., Gorchein, A., Buonaccorsi, G. A., Thorpe, S. M., Spencer, G. M., . . . Bown, S. G. (1995). Photosensitisation and photodynamic therapy of oesophageal, duodenal, and colorectal tumours using 5 aminolaevulinic acid induced protoporphyrin IX--a pilot study.

Regula, J., A J. MacRobert, A. Gorchein, G A. Buonaccorsi, S M. Thorpe, G M. Spencer, A R. Hatfield, i S G. Bown. Photosensitisation and Photodynamic Therapy of Oesophageal, Duodenal, and Colorectal Tumours Using 5 Aminolaevulinic Acid Induced Protoporphyrin IX--a Pilot Study. 1995.

Regula, J., et al. Photosensitisation and Photodynamic Therapy of Oesophageal, Duodenal, and Colorectal Tumours Using 5 Aminolaevulinic Acid Induced Protoporphyrin IX--a Pilot Study. 1995.