Guidelines for Reviewers

JMA Journal’s peer review process depends upon the professionalism of its volunteer reviewers. All reviewers are experts in the field of research; therefore, they are in the best position to judge the quality and importance of the work submitted to JMA Journal. The names of the reviewers remain unknown to the authors, as JMA Journal operates a single-anonymized review throughout the review process. 

I. Peer Review Process

  1. The author submits a manuscript and it receives a manuscript identification number.
  2. The Support Office performs a technical evaluation to check the manuscript’s formatting and style is in accordance with the Instructions for Authors.
  3. An editor screens the manuscript and decides whether or not to send it for full peer review. If the decision is not to send the manuscript for review, the editor sends a decision letter via e-mail with the decision of immediate rejection.
  4. If the editor decides to send the manuscript for a full peer review, the editor assigns generally 2 external reviewers to evaluate the manuscript.
  5. Reviewers agree to review the manuscript.
  6. Reviewers submit their reports to the editor.
  7. The editor reviews the reviewers’ reports and makes a decision.
  8. The Support Office contacts the author with the decision.
  9. If the author receives the opportunity to revise the paper, he/she revises the paper according to the review comments and resubmits. The paper then goes through the same process above, but the editor may choose to accept the paper without further review by the reviewers.

JMA Journal expects that peer review is fair, unbiased and timely. Decisions to accept or reject a manuscript for publication are based on the manuscript’s importance to the field, originality and clarity in expression, the study’s validity and its relevance to JMA Journal’s scope and aim.

JMA Journal supports and adheres to the guidelines and best practices including Recommendations for the Conduct, Reporting, Editing, and Publication of Scholarly Work in Medical Journals ( by the International Committee of Medical Journal Editors (ICMJE) and the Principles of Transparency and Best Practice in Scholarly Publishing (a joint statement by the Committee on Publication Ethics [COPE], the Directory of Open Access Journals [DOAJ], the World Association for Medical Editors [WAME] and the Open Access Scholarly Publishers Association [OASPA];

The points below provide general guidelines for reviewing. Please read the instructions and required ethics and policy statements, along with the journal instructions thoroughly. If you have any questions, please contact the JMA Journal Support Office.

II. Ethical Responsibilities of Reviewers

1. Timeliness
Please remember that the deadline to submit your review comments is 2 weeks from the day you agreed to review. If it is not possible to meet the deadline, please contact the Support Office immediately so that we can decide whether to extend the deadline or assign an alternate reviewer.

2. Conflict of Interest for Reviewers
Any potential conflicts of interest on your part must be brought to the attention of the editor before you begin the review process. If you are involved, in present or in the past, in any part of the research presented in the manuscripts, including but not limited to, financial interests, belonging to the same institution as any of the author(s), collaborating with the authors, other relationships or connections, both professional or personal, with any of the authors, companies, or institutions related to the manuscript, which might prevent you from providing a fair and unbiased review, you should decline the role of reviewer and inform the editor so that another individual can be invited to review the manuscript.

3. Confidentiality
The review process will remain strictly confidential.

  • Do not discuss or mention, in any way or to anyone, the contents of the paper before or after the review process.
  • The manuscript submitted for peer-review is a privileged document. All materials must be treated in confidence. If additional advice from a colleague or any parties is thought to be helpful, please contact the Support Office in advance to obtain permission from the editor. Do not pass the manuscript on to your colleagues or other third parties without first obtaining consent from the editor.
  • Before publication, the research described in the paper cannot be referred to in the reviewer's own work. You must refrain from citing or referring to the work before it has been published.
  • Do not retain any copies of reviewed manuscripts and do not use the knowledge of their content or take scientific, financial, personal, or other advantage of material available to you through the peer review process.
  • Do not upload the manuscript to software or any AI-assisted tools or technologies.

4. Constructive Comments
Provide objective and constructive feedback in your review to encourage the author to improve the paper and their writing. When you find negative aspects, suggest concrete means for improvement. Refrain from being hostile or inflammatory and from making derogatory personal comments.

5. Impartiality
Reviewer comments should be based on an impartial consideration of the facts, exclusive of personal or professional bias. All comments should be based solely on the paper’s scientific merit, originality, and quality of writing as well as on the relevance to the JMA Journal’s scope and mission, without regard to race, ethnic origin, sex, religion, or citizenship of the authors. If you determine that you have a bias during the review of the paper, please contact the editor immediately.

6. Competence
You should accept an assignment only if you have adequate expertise to provide an authoritative assessment. If you think certain aspects of a manuscript are outside your expertise or realize that your expertise is limited, you should contact the Support Office so that we can decide whether you should continue and address your areas of expertise only or whether to assign an alternate reviewer(s).

7. Manuscripts You Have Previously Handled
If you are invited to assess a manuscript you previously reviewed for another journal, please consider the manuscript as a new submission. In such case, the authors may have made changes according to the previous review comments, and the JMA Journal’s criteria for evaluation may differ from those of the other journal.

8. Ethical Policies
Please note any suspicious evidence of the ethical misconducts and bring it to the attention of the editor immediately. Please see our general publication ethics policies here.

9.Use of Artificial Intelligence (AI)-Assisted Tools/Technologies
Reviewers are prohibited from uploading the manuscript to software or AI-assisted tools/technologies where the confidentiality is not assured. It is required to disclose to the Support Office if any AI-assisted tools or technologies are used to facilitate the review.

III. Invitation for Peer Review

1. General Process
Reviewer invitations are sent by email from the submission system. Use the links in the email to accept or decline the invitation to review. The invitation includes manuscript details, such as the title, the names of authors and the abstract, which may help you to determine whether the subject of the manuscript is within your areas of expertise.

If you are unable to agree to review a manuscript, please click the decline link in the e-mail. In such cases, it would be appreciated if you suggested another potential reviewer.

If you click the link to accept the invitation to review a manuscript, you will receive a notification via e-mail about how to log-in to our online system to access the manuscript in PDF or HTML format, and instructions for submitting your comments through the online system.

2. Revised Manuscripts
The revised version of a manuscript is normally sent back to some or all of the original reviewers for re-review. If you are assigned to review a manuscript you previously reviewed, please ensure that changes requested in the original review have been made, rather than raising additional issues.

IV. Your Comments

1. General Guidelines

  • Evaluate whether the submitted manuscript fits the scope and aim of JMA Journal and demonstrates sufficient evidence of originality, in addition to the paper’s validity and potential impact to the readership of the Journal.
  • Your review comments should indicate whether the writing is clear and concise, and whether the style of writing and structure of the paper are appropriate and allow the reader to understand the content easily.
  • Evaluate the work’s scientific accuracy and comment on any missing information or methodological flaws.
  • All criticisms should be specific. Provide evidence with appropriate references to substantiate general statements to help editors in their evaluations and decisions, and help authors with revisions.
  • Any personal criticism of authors, derogatory personal comments or unfounded accusations must be avoided.
  • Avoid making any negative comments or unjustified criticisms of any work that is mentioned in the manuscript.
  • You should not suggest that the authors cite your work to increase your citation count. Suggestions must be based only on valid academic or technological reasons.
  • Remain anonymous as the Journal operates a single-anonymized review process.

2. Points to Consider
Points to consider in your review include:

  • Significance of the manuscript to the research community.
  • Interest and the potential impact to the broad readership of the Journal.
  • Weaknesses of the manuscript that need to be corrected in the revision process.
  • Accuracy of the title and abstract, and keywords.
  • Sufficiency of contents, figures, and tables.
  • Appropriate and accurate references.
  • Quality and readability of the English language as presented in the manuscript.
  • Clarity of the aim.
  • Appropriate statistical analysis, if appropriate.
  • Substantial data are presented in the result section.
  • Conclusions are supported by the data presented.

3. Confidential Comments to the Editor
In JMA Journal’s peer review management system, there is a section titled “Confidential Comments to the Editor”. Your comments entered in this section will be seen only by the editors. The comments will not be sent to the authors. If there are any possible conflicts of interest, ethical issues, or any other comment you wish not to be shared with the authors, please comment in this section.

4. Comments to the Authors
Your peer review comments should include an introductory paragraph, which includes your overall impression of the paper. This paragraph should be followed by specific comments, which may be divided into two sections such as major and minor points. Your comments are sent to the author as a part of the decision letter. However, please keep in mind that it is inappropriate to include any statements related to the acceptance or rejection of the paper.

5. Decisions on Manuscript Publication
All decisions on the manuscript publication, which include acceptance, major or minor revisions, or rejection, are made by the editors of JMA Journal when all the reviewer and editor reports are submitted and evaluated.

JMA Journal cover

Current Issue

Volume: 7
Issue: 3

PRINT ISSN: 2433-328X
ONLINE ISSN: 2433-3298
Japan Medical Association
2-28-16 Honkomagome, Bunkyo-ku, Tokyo 113-8621, Japan
The Japanese Association of Medical Sciences
c/o Japan Medical Association, 2-28-16 Honkomagome, Bunkyo-ku, Tokyo
113-8621, Japan

Frequency: Quarterly
Journal Metrics (2023) as of January 31, 2024:
206 papers submitted to JMA Journal
56.1% acceptance rate
34.3 days from submission to first decision
62.8 days from submission to acceptance

Impact Factor

1.5 (2023)
Available in PMC

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