Page 73 - Read Online

Page 14 of 15 Kato et al. Hepatoma Res 2021;7:10 I http://dx.doi.org/10.20517/2394-5079.2020.129

DECLARATIONS
Acknowledgments
The authors thank Akira Yasuda, Takeshi Takahara, Yoshinao Tanahashi, Masayuki Kojima, Sanae
Nakajima, Gozo Kiguchi, Yuichiro Uchida and Junichi Yoshikawa for their substantial contributions to
surgery and preparation of the manuscript.
We would like to thank Editage (www.editage.com) for English language editing.

Authors’ contributions
Concepts and design of the study and data acquisition, analysis and interpretation: Kato Y, Sugioka A,
Uyama I
Performance of surgery: Kato Y, Uyama I
Technical support: Sugioka A, Uyama I
Administrative and material support: Sugioka A, Uyama I

Availability of data and materials
The datasets are not available for public access due to patient privacy concerns but are available from the
corresponding author on reasonable request.

Financial support and sponsorship
None.

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

Ethical approval and consent to participate
The study was conducted under the approval of Institutional Regulation Board (approval number: HM19-
064) and in accordance with the Declaration of Helsinki (2000). Written informed consent was obtained
from all patients.

Consent for publication
Written informed consent for publication was obtained from all patients.

Copyright
© The Author(s) 2021.

REFERENCES
1. Suda K, Nakauchi M, Inaba K, Ishida Y, Uyama I. Robotic surgery for upper gastrointestinal cancer: current status and future
perspectives. Dig Endosc 2016;28:701-13.

2. Andolfi C, Umanskiy K.Appraisal and current considerations of robotics in colon and rectal surgery. J Laparoendosc Adv Surg Tech A
2019;29:152-58.

3. Ocuin LM, TsungA. Robotic liver resection for malignancy: Current status, oncologic outcomes, comparison to laparoscopy, and future
applications. J Surg Oncol 2015;112:295-301.
4. Qiu J, Chen S, Chengyou D. A systematic review of robotic-assisted liver resection and meta-analysis of robotic versus laparoscopic
hepatectomy for hepatic neoplasms. Surg Endosc 2016;30:862-75.
5. Tsung A, Geller DA, Sukato DC, et al. Robotic versus laparoscopic hepatectomy: a matched comparison. Ann Surg 2014;259:549-55.
6. Kingham TP, Leung U, Kuk D, et al. Robotic liver resection: a case matched comparison. World J Surg 2016;40:1422-8.

7. MakuuchiM. Surgical treatment for HCC--special reference to anatomical resection. Int J Surg 2013;11:S47-9.
8. Shindoh J, Makuuchi M, Matsuyama Y, et al. Complete removal of the tumor-bearing portal territory decreases local tumor recurrence
and improves disease-specific survival of patients with hepatocellular carcinoma. J Hepatol 2016;64:594-600.
9. KishiY, Hasegawa K, Kaneko J, et al. Resection of segment VIII for hepatocellular carcinoma. Br J Surg 2012;99:1105-12.

10. Hasegawa Y, Nitta H, Takahara T, et al. Safely extending the indications of laparoscopic liver resection: When should we start