1. Oxford
Glycobiology Institute, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, United Kingdom
2. Division
of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, United Kingdom
3. School
of Life Sciences, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom