1. Department of Clinical Neuroscience (CNS), Center for Molecular Medicine (CMM), Karolinska Institutet, 17176 Stockholm, Sweden
2. Institute of Physics Belgrade, University of Belgrade, 11080 Belgrade, Serbia
3. Optical Sciences Centre, Department of Physics and Astronomy, School of Science, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
4. Department of Neurosciences, University of California San Diego, La Jolla, California 92093-0819, United States
5. Department of Neuroscience, Unité Neurobiologie Intégrative des Systèmes Cholinergiques, Institut Pasteur, F-75724 Paris 15, France
6. Department of Medical Biochemistry and Biophysics (MBB), Karolinska Institutet, 17177 Stockholm, Sweden