1. Institute of Metabolism and Systems Research, University of Birmingham, Edgbaston B15 2TT, UK.
2. Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham B15 2TH, UK.
3. Danish Headache Center, Clinic of Neurology, Rigshospitalet-Glostrup, University of Copenhagen, Nordre Ringvej 69, 2600 Glostrup, Denmark.
4. Department of Neurology, University Hospitals Birmingham NHS Foundation Trust, Birmingham B15 2TH, UK.
5. Institute of Inflammation and Ageing, University of Birmingham, Edgbaston B15 2TT, UK.
6. Centre of Membrane Proteins and Receptors (COMPARE), University of Birmingham and University of Nottingham, Midlands, UK.