1. Division of Genetic Epidemiology, Department of Medical Genetics, Clinical and Molecular Pharmacology, Innsbruck Medical University, Schoepfstrasse 41, A-6020 Innsbruck, Austria, Vitateq Biotechnology GmbH, Innsbruck, Austria, Glycobiology Institute, University of Oxford, United Kingdom, MPI of Biochemistry, Martinsried, Germany, Institute of Medical Biochemistry and Molecular Biology, University of Graz, Austria, MPI of Psychiatry, Munich, Germany, and Institute of Molecular Pathology, Vienna, Austria