Authorship
Galli J: substantial contributions to conception and design, acquisition of data, analysis and interpretation of data; involved in drafting the manuscript and revising it critically for important intellectual content; gave final approval of this manuscript version to be published
Settimi S, Tricarico L, Almadori G, Paludetti G: acquisition of data, analysis and interpretation of data; involved in drafting the manuscript and revising it critically for important intellectual content; gave final approval of this manuscript version to be published