Languages English, French, Spanish and Japanese are official languages of the congress. All sessions held in the main auditorium will be translated simultaneously from and into these languages. To assure quality language interpretation, the papers of presentations in the main auditorium will be made available to the interpreters for study in advance of the congress. Authors of presentations in the main auditorium must send their papers in early. Main auditorium papers not received by July 10, 2008 will be dropped from the program. Authors of other presentations are requested to have summary materials available in at least one language other than that of the presentation.