1. Institute of Cellular Medicine, Newcastle University, Newcastle, United Kingdom;
2. Receptor Systems Biology Laboratory, Hagedorn Research Institute, Novo Nordisk, Gentofte, Denmark;
3. Department of Clinical Biochemistry, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark;
4. School of Mathematics and Statistics, Newcastle University, Newcastle, United Kingdom; and
5. Unilever Discover, Colworth Science Park, Sharnbrook, Bedford, United Kingdom