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Antonazzo et al. Vessel Plus 2020;4:3 I http://dx.doi.org/10.20517/2574-1209.2019.33 Page 7 of 8

DECLARATIONS
Authors’ contributions
Designed the review, performed all reviewing activities and drafted the manuscript: Antonazzo B, Biondi-
Zoccai G
Participated in review design, supervised all reviewing activities, and provided critical contributions to the
manuscript: Marullo AGM, Frati G, Ronzoni S, Chiariello GA, Versaci F, Giordano A
All authors eventually approved it in its final version.

Availability of data and materials
Not applicable.

Financial support and sponsorship
None.

Conflicts of interest
All authors declared that there are no conflicts of interest.

Ethical approval and consent to participate
Not applicable.

Consent for publication
Not applicable.

Copyright
© The Author(s) 2020.

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