1. Institute of Pharmacology and Toxicology and Bio-Imaging Center, University of Würzburg, Würzburg, Germany.
2. Department of Pharmacology, Faculty of Pharmacy, University of Khartoum, Khartoum, Sudan.
3. Department of Biotechnology and Biophysics, Biocenter, University of Würzburg, Würzburg, Germany.
4. Department of Neurology & Neurosurgery, Montréal Neurological Institute, McGill University, Montréal, QC H3A 2B4, Canada.
5. Department of Genetics, Harvard Medical School, Boston, MA 02115, USA.
6. Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK.
7. Centre of Membrane Proteins and Receptors (COMPARE), Universities of Nottingham and Birmingham, Birmingham, UK.