Vice President and Head of the Division of Allergology, Paul-Ehrlich-Institut, Langen, Germany. Professor of Food Chemistry, Faculty of Chemical and Pharmaceutical Sciences, Johann Wolfgang Goethe-Universität, Frankfurt/Main, Germany. Member of the European Academy of Allergy and Clinical Immonology. Member of the German Chemical Society and the German Food Chemisty Society. Chairman of the International Union of Immunological Societies Allergen Standardization Subcommittee.