About the Authors

Vittoria Colizza, Marc Barthelemy, Alessandro Vespignani
School of Informatics and Center for Biocomplexity, Indiana University, Bloomington, Indiana, United States of America

Vittoria Colizza, Alain Barrat, Alessandro Vespignani
Complex Networks Lagrange Laboratory, Institute for Scientific Interchange Foundation, Turin, Italy

Alain Barrat
Unité Mixte de Recherche 8627, Centre National de la Recherche Scientifique, Université Paris-Sud, Orsay, France

Marc Barthelemy
Commissariat à l'Energie Atomique, Direction Ile-de-France, Centre d'Etudes de Bruyères Le Châtel, Bruyères Le Châtel, France

Alain-Jacques Valleron
Unité de Recherche en Epidémiologie, Systèmes d'Information et Modélisation, Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 707, Université Pierre et Marie Curie, Paris, France

Alain-Jacques Valleron
Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris, Paris, France

Corresponding Author

alexv@indiana.edu

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

VC, AB, MB, AJV, and AV designed the study and analyzed the data. VC, AB, MB, AJV, and AV contributed to writing the paper. VC, AB, MB, and AV collected data or did experiments for the study.