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Information For Authors

About the journal

The Siriraj Medical Journal (SMJ), published continuously since 1949, is an international, double-blinded, peer-reviewed, monthly journal. SMJ is the official journal of the Faculty of Medicine Siriraj Hospital, Mahidol University, which is the oldest medical school in Thailand. Siriraj Hospital is named after Prince Siriraj Kakuttaphan, a dying-young son of His Majesty the King Rama 5, who turned the history of medicine in Thailand from traditional medicine to modern medicine, and who also inspired his son, Prince Mahidol, to contribute and improve the public health system of Thailand for the benefits of mankind. SMJ is now available both in printed version and electronic version.

Aims and Scope

The Siriraj Medical Journal (SMJ) aims to promote communication among researchers in health sciences. It is published monthly and accepts the manuscripts in the forms of the original article, review article and letter to the Editor. It is academically double-blinded peer-reviewed and designed for all physicians, researchers, and health personnel, regardless of their specialties.

Instructions for Authors

All manuscripts submitted to SMJ must not be pre­viously unpublished or considered for publication elsewhere at any time during SMJ's review period. The editorial office will seek at least two experts who work in different institutions to consider the manuscript content for the peer-review process. The Editor-in- Chief will make the decision regarding acceptance of any manuscripts for publication by taking the opinions from at least one member of the editorial board and from the peer reviewers into the consideration.

Authors are encouraged to submit manuscripts via

For the text and tables, the manuscripts should be saved in a Microsoft word file. Page setup should be made on the size of A4 paper (210 x 297 mm). The font should be "Times New Roman" with the size of 12 pt. The top, bottom and side margins should be 25 mm. wide. All pages should be numbered consecutively together with the first author's name at the top right-hand corner, beginning with the title page. All digital files should be free of any virus or other malicious threats. No printout of the manuscripts is required. Any manuscript submission that fails to follow this instruction will be returned to the authors without review.

SMJ accepts the World Medical Association Declaration of Helsinki Ethical Principles for Medi­cal Research Involving Human Subjects (Seoul, 2008). Thus, for any new research project involving human research subjects starting from 1 March 2009, the authors need to submit a photocopy of a document of approval from Institutional Review Board (IRB) or Institutional Ethic Committee (IEC). For any research project involving human research subjects starting before 1 March 2009 that does not have a docu­ment of approval from IRB or IEC, the authors need to convince the editorial board that the research does not violate any ethical concern on human research subjects. In addition, for any new clinical trial starting from 1 March 2009, the authors need to register at the public clinical trial registry prior to the research conduct. The registration number should be placed at the end of the abstract in parentheses.

All authors should approve the submission of the manuscript. The cover letter should indicate that the manuscript is submitted to SMJ only and it has never been published elsewhere in English or other languages. Authors should be aware of copyright violation, conflicts of interest, plagiarism, and other misconducts in biomedical research and publication. Written permissions from persons who provide personal communication or from those to be acknowledged in the manuscript are required in case the readers may infer their endorsement of such activities as technical assistance, provision of illustration etc. Letter of Certification before Publishing Article(s) in Siriraj Medical Journal (SMJ)

Types of manuscripts

Types of manuscripts subjected to peer review include Original Articles, Review Articles, Special Issue and Letters to the editor.

Original Articles

Original articles should be hypothesis-driven studies. Manuscripts should include an abstract, and appropriate experimental details and convincing results to support the conclusions. It must be written in English with no longer than 3,000 words for the text, excluding abstract, acknowledgments, references, and figure legends. The number of tables and figures/ illustrations should not exceeding 5-6 in total. The number for references is limited to 30. Manuscripts should contain sections, each of which starts on a new page: Title page, Abstract and Keywords, Text (Introduction, Materials and methods, Results, and Discussion), References, Tables (with captions) and Figures (with legends).

Review Articles

Review articles survey recent development in medicine and public health. The articles have a limit of 5000 words, excluding abstracts, references, tables, and figures. The number of references is up to 50. The number of tables and illustrations should not exceed 8 in total. Systematic reviews (and meta-analyses whenever appropriate) are of interest. Manuscripts reporting systematic reviews and meta-analyses should comply with PRISMA statements (Preferred Reporting Items for Systematic Reviews and Meta-Analyses).

Letters to the Editor

Letters to the Editor are considered for publication, provided they do not contain material that has been submitted or published elsewhere. They do not contain abstracts or keywords; need not be divided into sections and should not contain figures. Only one table or illustration is permitted. An exception can be allowed by the Editor-in-Chief when appropriate. The text, excluding references, must not exceed 500 words. No more than 10 references are allowed. SMJ considers letters with commentaries and opinions on published papers of which topics may be useful and informative to the scientific community to be submitted.

Manuscript Format

This is strictly applied to the preparation of original articles. The structure includes a title page, abstract and keywords, text [introduction, materials and methods, results, discussion, acknowledg­ments, references used in Index Medicus (the Vancouver system)], tables with captions, and illustrations/ figures with legends.

Title page
The title page should give a concise title, the first and last names of all authors, high degrees, their affiliations, e-mail and the correspondence. The orders of contributors listed should be agreed amongst the investigators. Full contact details should be provided for the corresponding author.

Abstract and keywords
The abstract should be an structured paragraph of no more than 250 words: Introduction, Materials and Methods, Results and Conclusion. Three to ten keywords, which may appear in the title, should be given in alphabetical order below the abstract, each separated by a comma.

This should give a short, clear account of the background and reasons for undertaking the study by reference only to the pertinent literature. It should not be a review of all literature in the field and do not repeat the Discussion here.

Materials and methods
This section should contain sufficient detail so that all experimental procedures can be repeated by others in conjunction with cited references. It may be divided into subheadings such as participants, intervention, randomization, and statistical analysis. Manuscripts should contain a statement to the effect that all human studies have been reviewed by a named institutional Ethics committee with relevant jurisdiction and that all participants had given, usually written, informed consent before their inclusion in the study. Clinical trials should be registered and the registration number should be stated. Details that might disclose the identity of the subjects under study should be omitted. Authors should also confirm that their work complies with the Code of Ethics of the World Medical Association.

The description of results should not reiterate data that appear in Tables and Figures and, likewise, the same data should not be displayed in both Tables and Figures. The Results section should be concise and follow a logical sequence.


Do not repeat the Introduction, the Results and Figures and Tables. Discussion should (i) mention whether the results agree with or contradict previous findings, (ii) discuss the significance of the results against the background of existing knowledge, (iii) identify clearly those aspects that are novel, and (iv) state if the original hypothesis was confirmed. The final paragraph should highlight the main conclusion(s), and provide some indication of the direction future research should take.

These should be brief, and should include sources of financial support. Acknowledgements should be made only to those who have made a significant contribution to the study.

Authors are responsible for the accuracy of the references. These may include published articles as well as those in press. In the text of the manuscript, references to the literature should be numbered consecutively and indicated by a superscript. Each reference should be numbered individually and listed at the end of the manuscript; examples of citation format are given below. All authors should be listed for papers with up to six authors; for papers with more than six, the first six authors only should be quoted, followed by et al.

Examples of journal citation format

1. Akaraviputh T, Arunakul S, Lohsiriwat V, Iramaneerat C, Trakarnsanga A. Surgery for gastrointestinal malignant melanoma: experience from surgical training center.

World J Gastroenterol. 2010;16:745-8.

2. Lohsiriwat V, Lohsiriwat D, Boonnuch W, Chinswangwatanakul V, Akaraviputh T, Riansuwan W, et al. Outcomes of sphincter-saving operation for rectal cancer without protective stoma and pelvic drain, and risk factors for anastomotic leakage. Dig Surg. 2008;25:191-7.

3. Geraud G, Spierings EL, Keywood C. Tolerability and safety of frovatriptan with short- and long-term use for treatment of migraine and in comparison with sumatriptan. Headache. 2002;42 Suppl 2:S93-9.

Example of a book citation:

4. Murray PR, Rosenthal KS, Kobayashi GS, Pfaller MA. Medical microbiology. 4th ed. St. Louis: Mosby; 2002.

Example of an article in a book:

5. Meltzer PS, Kallioniemi A, Trent JM. Chromosome alterations in human solid tumors. In: Vogelstein B, Kinzler KW, editors. The genetic basis of human cancer. New York: McGraw-Hill; 2002. p. 93-113.

Example of an article in an electronic book:

6. Akaraviputh T, Trakarnsanga A. Surgical management of malignant melanoma of gastrointestinal tract. In: Murph M, editor. Melanoma in the clinic-Diagnosis, management and Complications of Malignancy. Available from:


The names of journals cited should be abbreviated according to the International List of Periodical Title Word Abbreviations'. Citations of unpublished data' and e.g. S. A. Waksman, personal communication' should be written in the text parenthetically. Manuscripts that have been accepted for publication but are not yet published must be identified in the reference list as in press'.

Tables must supplement, not duplicate, the data in the text or Figures. Tables should consist of at least two columns; columns should always have headings. Tables should have a brief footnote that identifies all abbreviations used. The data in the Tables should be consistent with those cited in the relevant places in the text.

Figures must supplement, not duplicate, the data in the text or in Tables. Illustrations must clearly convey their message and be of high quality and sufficient size and clarity (especially lettering, arrows and data points) to be interpretable when reduced for publication. Figures should be given a title and numbered sequentially as Figure 1, Figure 2, etc. and cited (as Fig 1., Fig 2. etc.) sequentially in the text. Generate TIFF or JPG files. Keep all individual layers and place words, arrows and other symbols in one layer.

Written permission to use photograph of potentially identifiable person must be obtained from that person. The authors do not need to send the original written permission with the manuscript but they need to make a statement in the cover letter that they have already obtained the permission.


Summary checklist to submit a manuscript to SMJ

The submitted manuscript will be returned to the author(s) without review if its format is not correct or its content does not fit the scope of the journal. The summary checklist includes a cover letter, a manuscript in Microsoft word file (Abstract, Text, References, Acknowledgements and Tables with captions), a photocopy of a document of ethical approval if more than 1 subject were included, a photocopy showing the clinical trial registration and illustrations/ figures in TIFF or JPG.

Submission of a manuscript to SMJ

Please submit your manuscript online with or contact Ms. Amornrat Sangkaew (Editorial Office Secretary) Address: SiMR Bldg., 2nd Fl., Room No.207 Siriraj Hospital, Bangkok 10700, Thailand. Tel. (662)419-2884

E-mail address:


Siriraj Medical Journal is the official publication organ of The IASGO Thailand and Faculty of Medicine Siriraj Hospital. The journal, the society and the Faculty are nonprofit organizations. The journal's expenses are covered through the Faculty of Medicine Siriraj Hospital's financial resources and advertising revenues. The journal implements the open access publication model. Throughout the publication process, neither the authors or readers charged a fee nor the journal or the Faculty demands any types of fees or charges.