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Padarti et al. Vessel Plus 2018;2:21 I http://dx.doi.org/10.20517/2574-1209.2018.34 Page 17 of 23

DECLARATIONS
Author’s contributions
Akhil Padarti drafted the manuscript under the supervision of Jun Zhang.

Availability of data and materials
Not applicable.

Financial support and sponsorship
None.

Conflicts of interest
Both 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) 2018.

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