?url_ver=Z39.88-2004&rft_id=PQ+ETD%3A593283&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=JH&rft.au=Woodhams%2C+JH&rft.aulast=Woodhams&rft.title=Studies+of+photodynamic+therapy%3A+Investigation+of+physiological+mechanisms+and+dosimetry&rft.date=31+January+2006&rft.degree=Doctoral&rft.tpages=306&rft.inst=UCL+(University+College+London)