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Author Instructions

Across all article types, the number of cited original research articles should not exceed 50.
For Commentary, Editorial, Opinion, and Perspective articles, the total number of references should not exceed 20.

Manuscript Definition Abstract Keywords Main Text Structure Length
Type Limitations
Original An Original Article describes Structured abstract 3-8 keywords The main content should /
Article detailed results from novel including Aim, include four sections:
research. All findings are Methods, Results and Introduction, Methods,
extensively discussed. Conclusion. No more Results and Discussion.
than 250 words.
Mini A Mini Review/Review article Unstructured abstract. 3-8 keywords The main text may consist 3000 max/no
Review/ should provide readers with an No more than 250 of several sections with limitation
Review in-depth understanding of a words. unfixed section titles. We
field by summarizing existing suggest that the author
literature, and highlight key gaps includes an "Introduction"
and challenges to address future section at the beginning,
research. several sections with
unfixed titles in the middle
part, and a "Conclusion"
section in the end.
Meta- A Meta-Analysis is a statistical Structured abstract 3-8 keywords The main content should /
Analysis analysis combining the results including Aim, include four sections:
of multiple scientific studies. It Methods, Results and Introduction, Methods,
is often an overview of clinical Conclusion. No more Results and Discussion.
trials. than 250 words.
Systematic A Systematic Review collects Structured abstract 3-8 keywords The main content should /
Review and critically analyzes multiple including Aim, include four sections:
research studies, using methods Methods, Results and Introduction, Methods,
selected before one or more Conclusion. No more Results and Discussion.
research questions are formulated, than 250 words.
and then finding and analyzing
related studies and answering
those questions in a structured
methodology.
Technical A Technical Note is a short article Unstructured abstract. 3-8 keywords / 3000max
Note giving a brief description of a No more than 250
specific development, technique words.
or procedure, or it may describe
a modification of an existing
technique, procedure or device
applied in research.
Commentary A Commentary is to provide None required. None required. / No more than
comments on a newly published two pages.
article or an alternative viewpoint
on a certain topic.
Editorial An Editorial is a short article None required. None required. / /
describing news about the journal
or opinions of senior Editors or
the publisher.
Letter to A Letter to Editor is usually an None required. None required. / /
Editor open post-publication review of
a paper from its readers, often
critical of some aspect of a
published paper. Controversial
papers often attract numerous
Letters to Editor.
Opinion An Opinion usually presents None required. None required. / No more than
personal thoughts, beliefs, or two pages.
feelings on a topic.

Hepatoma Research V