Congress Presentation
Speaker: Professor N. Marx (Aachen, DE)
Speaker: Doctor P. Armstrong (Edmonton, CA)
Speaker: Professor L. Leiter (Toronto, CA)
Speaker: Professor L. Ryden (Stockholm, SE)
Speaker: Professor N. Marx (Aachen, DE) Doctor P. Armstrong (Edmonton, CA) Professor L. Ryden (Stockholm, SE) Professor L. Leiter (Toronto, CA)