1. Center for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain
2. Complex Systems Group, Universidad Rey Juan Carlos, Móstoles, Spain
3. CNR, Istituto dei Sistemi Complessi, Florence, Italy
4. Department of Psychiatry, Behavioural and Clinical Neurosciences Institute, University of Cambridge, Cambridge, UK
5. GlaxoSmithKline, Alternative Discovery and Development, Addenbrooke's Centre for Clinical Investigations, Cambridge, UK