1. Institute for Biocomputation and Physics of Complex Systems, Universidad de Zaragoza, Zaragoza, Spain
2. Unidad Mixta Interdisciplinar de Comportamiento y Complejidad Social (UMICCS), Spain
3. IFISC, Institute for Cross-Disciplinary Physics and Complex Systems, Palma de Mallorca, Spain
4. Department of Theoretical Physics, Faculty of Sciences, Universidad de Zaragoza, Zaragoza, Spain
5. Interdisciplinary Group of Complex Systems (GISC), Department of Mathematics, Universidad Carlos III de Madrid, Spain
6. UC3M Santander Institute of Big Data (IBiDat), Universidad Carlos III de Madrid, Leganés, Spain
7. ISI Foundation, Turin, Italy