1. Complex
Carbohydrate Research Center, University of Georgia, Athens, Georgia, United States
2. Department
of Cellular and Molecular Medicine, Glycobiology Research and Training
Center, University of California, San Diego, La Jolla, California, United States
3. Department
of Chemistry, Biochemistry I, Bielefeld University, Bielefeld, Germany
4. Department
of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical
Sciences, and Bijvoet Center for Biomolecular Research, Utrecht University, Universiteitsweg
99, 3584 CG Utrecht, The Netherlands