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International Photodynamic Association INTERNATIONAL PHOTODYNAMIC ASSOCIATION The International Photodynamic Association IPA was founded in 1986 to support and endorse the scientific advancement and clinical development of photomedicine in particular in the areas of photodynamic disinfection photodynamic therapy PDT photoimmunotherapy PIT and photodiagnosis PD. With members and associates from over 30 countries the IPA represents a truly global community consisting of prominent international scientists clinical and translational researchers healthcare professionals and students across academic hospital government and private sector organizations. The IPA promotes the study of diagnosis and treatment using lightactivated photosensitizers and disseminates scientific information to its members the research community and to the community at large. The IPA organizes a Biennial World Congress providing members and nonmembers a unique opportunity to share and learn more about global developments and research in photodynamic therapy photoimmunotherapy and photodiagnosis.