About the Authors

Fernando P. Santos

Affiliations INESC-ID and Instituto Superior Técnico, Universidade de Lisboa, IST-Tagusparque, Porto Salvo, Portugal, ATP-Group, Lisboa, Portugal

Francisco C. Santos

Affiliations INESC-ID and Instituto Superior Técnico, Universidade de Lisboa, IST-Tagusparque, Porto Salvo, Portugal, ATP-Group, Lisboa, Portugal

Jorge M. Pacheco

jmpacheco@math.uminho.pt

Affiliations ATP-Group, Lisboa, Portugal, Centro de Biologia Molecular e Ambiental, Universidade do Minho, Braga, Portugal, Departamento de Matemática e Aplicações, Universidade do Minho, Braga, Portugal

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: FPS FCS JMP. Performed the experiments: FPS FCS JMP. Analyzed the data: FPS FCS JMP. Contributed reagents/materials/analysis tools: FPS FCS JMP. Wrote the paper: FPS FCS JMP.