13Th World Congress of the International-Photodynamic-Association (Ipa)/3Rd International Congress of the European Platform of Photodynamic Medicine (Eppm)/2Nd Congress of the Head-And-Neck-Optical-Diagnosis-Society (Hnods), Date: MAY 10-14, 2011, Location: Innsbruck, AUSTRIA, Sponsors: Int Photodynam Assoc (IPA), Head & Neck Opt Diag Soc (HNODS)