Michele Di Mauro: conception of the study, analysis of data and drafting
of the work
Roberto Lorusso: revising critically the work, analysis of data
Alessandro Parolari: revising critically the work, drafting work
Justine M Ravaux: acquisition of data, analysis of data
Giorgia Bonalumi: acquisition of data, analysis of data
Stefano Guarracini: acquisition of data, drafting work
Fabrizio Ricci: acquisition of data, analysis of data
Umberto Benedetto: revising critically the work, drafting work
Antonio M Calafiore: revising critically the work, drafting work