1. Research &Development, Chiesi Farmaceutici S.p.A., Via Palermo 26/A, 43100 Parma, Italy, NiKem Research, Via Zambeletti 25, 20021 Baranzate, Milan, Italy, Neurobiology Unit, Research & Innovation, Via Svizzera 16, 35127 Padua, Italy, and Department of Biochemistry and Molecular Biology, University of Parma, Parco Area delle Scienze 23/A, 43100 Parma, Italy