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Russolillo et al. Mini-invasive Surg 2023;7:3 https://dx.doi.org/10.20517/2574-1225.2022.74 Page 5 of 6

discharged on the fourth postoperative day.

Video 2
This is an example of how to perform an intraoperative ultrasound to study all primary liver anatomic
landmarks (portal and hepatic vein systems) [Supplementary Video 2].

DECLARATIONS
Authors’ contributions
Made substantial contributions to conception: Russolillo N, Langella S, Tesoriere RL, Zingaretti CC,
Fontana AP, Ferrero A
Provided administrative, technical, and material support: Russolillo N, Langella S, Tesoriere RL, Zingaretti
CC, Fontana AP, Ferrero A
Draft and revise the work: Russolillo N, Langella S, Tesoriere RL, Zingaretti CC, Fontana AP, Ferrero A

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) 2023.

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