About the Authors

Michele Tumminello

Affiliations Department of Social and Decision Sciences, Carnegie Mellon University, Pittsburgh, Pennsylvania, United States of America, Dipartimento di Fisica, Università di Palermo, Palermo, Italy

Salvatore Miccichè

Affiliation Dipartimento di Fisica, Università di Palermo, Palermo, Italy

Ligia J. Dominguez

Affiliation Department of Internal Medicine and Geriatrics, University of Palermo, Palermo, Italy

Giovanni Lamura

Affiliation Socio Economic Research Centre, National Institute of Health and Science on Aging (I.N.R.C.A.), Ancona, Italy

Maria Gabriella Melchiorre

Affiliation Socio Economic Research Centre, National Institute of Health and Science on Aging (I.N.R.C.A.), Ancona, Italy

Mario Barbagallo

Affiliation Department of Internal Medicine and Geriatrics, University of Palermo, Palermo, Italy

Rosario N. Mantegna

rn.mantegna@gmail.com

Affiliation Dipartimento di Fisica, Università di Palermo, Palermo, Italy

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MT SM LJD RNM. Performed the experiments: MT SM LJD RNM. Analyzed the data: MT SM LJD RNM. Wrote the paper: MT SM LJD MB RNM GL MGM. Collected data within the ESAW project: LJD MB GL MGM.