Received: 4 May 2021
Accepted: 24 February 2022
First Online: 27 February 2022
: The study design was approved by the Institutional Review Board of the Pusan National University Hospital (No. 2009-025-095) and was conducted in accordance with the Declaration of Helsinki.
: Informed consent of subjects was obtained from the Korean Liver Cancer Study Group and the Ministry of Health & Welfare’s Korea Central Cancer Registry, which has legal authority for this data. Informed consent of the parent or legal authorized representatives for the deceased included in this data was obtained by these same authorities. The data was approved by the Institutional Review Board of Pusan National University Hospital (No. 2009-025-095).
: There are no details on individuals reported within the manuscript; therefore, consent for publication of images is not necessary.
: The authors declare no competing interests.
: The data were provided by Korean liver Cancer Study Group and the Ministry of Health & Welfare, Korea Central Cancer Registry. The datasets generated and analyzed during the current study are not publicly available due to the authority of this data belonging to Korean Liver Cancer Study Group and Ministry of Health & Welfare’s Korea Central Cancer Registry; data access was granted by the two authorities to the corresponding authors, and can be made available from the corresponding author on reasonable request.