1 Department of Cell Biology and Neuroscience, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy.
2 Instituto de Neurociencias, CSIC-UMH, Avenida Ramón y Cajal s/n, 03550 Sant Joan d'Alacant, Spain.
3 Institute of Applied Physiology, Ulm University, 89081 Ulm, Germany; Institute of Anatomy and Medical Cell Biology, Heidelberg University, 69120 Heidelberg, Germany.
4 Klinikum Rechts der Isar, Department of Anesthesiology, Technische Universität München, Ismaninger Strasse 22, 81675 Munich, Germany.