The structure varies according to the type of manuscript. Please refer to requirements in Types and Templates of Manuscripts.
Title
The title should be no more than 20 words, no more than 150 characters in total, including spaces.
The title should be specific and relevant, and provide an overall view of the paper’s significance rather than detailed contents.
The title should avoid use of jargon, uncommon abbreviations, and excessive punctuation.
Author and Affiliations
Authors’ forename and surname should be listed. The initials of middle names can be added.
The complete address information should be listed as the following format: Dept/Program/Center, Institution, City, State, Post Code, Country; E-mail Address.
One author should be designated as the corresponding author.
Authors are strongly encouraged to provide their ORCID if any, especially the corresponding author.
Dual first/last authorship is allowed. Authors should indicate dual authorship with a superscript “†”, like “Forename Surname1†, Forename Surname2†”.
Please check authors’ names carefully, as any change to authorship is not allowed after manuscript acceptance.
Check out more information about Authorship at Editorial Policies.
Abstract and Keywords
Abstract
This section usually describes the main objective(s) of the study, explains how the study was done, and the main findings.
The abstract should follow the specific requirements for word count and structure detailed in Types and Templates of Manuscripts.
Acronyms and abbreviations must be defined the first time they appear in the abstract. Abbreviations should only be used if the abbreviated term appears three or more times in the abstract (except commonly-used ones).
The abstract should not include any citation or footnote.
The registration number of clinical trials should be listed at the end of the abstract if appropriate.
Keywords
Three to eight keywords should be provided where required (see Types and Templates of Manuscripts).
Keywords should be closely related to the topic of the paper, but not too broad or specific to the field.
Non-standard abbreviations should be kept to a minimum.
Main Body
The main text may consist of distinct sections according to the category of manuscript. For instance, an Original Article should comprise: Introduction, Materials and Methods, Results and Discussion, whereas a review, the main text may comprise several sections with unfixed section titles. Templates are provided in the Types and Templates of Manuscripts to guide authors.
Introduction
Good introductions explain these points clearly and cohesively:
★ Relevant background that puts the study into context (a brief review of key literature);
★ Purpose of the work and its significance.
Materials and Methods
Materials and Methods should be sufficiently detailed so that they can be understood precisely by readers and reviewers, and to enable other researchers to fully replicate the study. This section should include:
★ Design and setting of the study;
★ Characteristics of participants or description of materials;
★ Clear description of all processes, interventions and comparisons;
★ Type of statistical analysis used, including a power calculation if appropriate.
Please make sure you are aware that:
★ Statistical terms, abbreviations, and all symbols used should be defined clearly;
★ Generic drug names should generally be used;
★ When proprietary brands are used in research, include the brand names in parentheses;
★ All clinical trials must be registered in a public trials registry at or before the time of first patient enrollment and the registration number must be listed at the end of the abstract;
★ Protocol documents for clinical trials, observational studies, and other non-laboratory investigations may be uploaded as supplementary materials.
More detailed information about clinical trials, please refer to Editorial Policies.
Results
Results should be presented in a logical order to support the main conclusions of the study.
Results of statistical analysis should be included either as text or as tables or figures if appropriate.
Do not repeat data already shown in figures and tables, in text sections. Authors should emphasize and summarize only the most important observations.
Data on all primary and secondary outcomes identified in the section Materials and Methods should also be provided.
Extra or supplementary materials and technical details can be placed in supplementary documents.
Discussion
This section should cover the key findings of the work.
Discussion should point out the potential short-comings and limitations on their interpretations.
Future research directions may also be mentioned.
Abbreviations
In general, terms should not be abbreviated unless they are used repeatedly (at least 3 times) and the abbreviation is helpful to the reader. The use of abbreviations should meet the following requirements:
★ Commonly-used abbreviations, such as DNA, RNA, ATP, etc., can be used directly without definition;
★ Non-standard abbreviations should be defined at first use in manuscripts with their abbreviations in parentheses;
★ Non-standard abbreviations should be avoided in titles, abstracts and keywords;
★ Non-standard abbreviations in tables and figures should be explained in the footnote or caption accordingly.
This section should list and define all non-standard abbreviations.
For example, FBS: fetal bovine serum HGF: hepatocyte growth factor.
Declarations
Acknowledgments (Optional)
Acknowledge anyone who is not an author, but contributed to the paper, including intellectual assistance, technical help (writing services), or special equipment or materials.
Author Contributions
The contributions of each author should be described. The journal adopts the CRediT Taxonomy to describe each author’s individual contributions to the work. The corresponding author(s) is responsible for providing the contributions of all authors at submission. We expect that all authors will have reviewed, discussed, and agreed to their individual contributions ahead of this time. Contributions will be published with the final article, and they should accurately reflect contributions to the work. The roles are not intended to define what constitutes authorship.
Use initials of Forename and Surname when mentioning an author in this section. If the initials are the same, spell the different forename or surname. For example, John A. Smith: JA Smith, John A. Smart: JA Smart; John A. Smith: John AS, James A. Smith: James AS.
An example of an Authors’ Contribution statement using CRediT with degree of contribution:
“AB: Conceptualization, Investigation, Writing-original draft, Writing-review & editing. CDE: Conceptualization, Investigation, Writing-original draft, Writing-review & editing. FG: Validation, Writing-review & editing, Supervision. All authors read and approved the submitted version.”
Contributor Role | Role Definition |
Conceptualization | Ideas; formulation or evolution of overarching research goals and aims. |
Data Curation | Management activities to annotate (produce metadata), scrub data and maintain research data (including software
code, where it is necessary for interpreting the data itself) for initial use and later reuse. |
Formal Analysis | Application of statistical, mathematical, computational, or other formal techniques to analyze or synthesize study data. |
Funding Acquisition | Acquisition of the financial support for the project leading to this publication. |
Investigation | Conducting a research and investigation process, specifically performing the experiments, or data/evidence collection. |
Methodology | Development or design of methodology; creation of models. |
Project Administration | Management and coordination responsibility for the research activity planning and execution. |
Resources | Provision of study materials, reagents, materials, patients, laboratory samples, animals, instrumentation, computing resources, or other analysis tools. |
Software | Programming, software development; designing computer programs; implementation of the computer code and supporting algorithms; testing of existing code components. |
Supervision | Oversight and leadership responsibility for the research activity planning and execution, including mentorship external to the core team. |
Validation | Verification, whether as a part of the activity or separate, of the overall replication/reproducibility of results/experiments and other research outputs. |
Visualization | Preparation, creation and/or presentation of the published work, specifically visualization/data presentation. |
Writing – Original Draft | Preparation, creation and/or presentation of the published work, specifically writing the initial draft (including substantive translation). |
Writing – Review & Editing | Preparation, creation and/or presentation of the published work by those from the original research group, specifically critical review, commentary or revision – including pre- or post-publication stages. |
Conflicts of Interest
Authors must declare any personal, professional or financial relationships which could potentially be construed as a conflict of interest. If authors are unsure whether conflicts of interest exist, please refer to Conflicts of Interest in Editorial Policies.
If there are no conflicts of interest, authors should state “The authors declare that they have no conflicts of interest.”.
Ethical Approval
Manuscripts involving human research must be approved by the specific ethics committee and comply with the Declaration of Helsinki. Authors should state that the article has obtained the consent from the participants and detail the information of ethics committee, including the name and the reference number if any.
Manuscripts involving animals research must be approved by an animal care and use committee. Authors should state that the article has been approved by certain committee and detail its information.
If a manuscript does not involve such issues, please state “Not applicable.” in this section.
More information is available at Editorial Policies.
Consent to Participate
The informed consent to participate in the study should be obtained from the participants, or their parents or legal guardians for children under 16. Such documents do not require a submission, but they must be available if requested. Authors should state “Informed consent to participate in the study was obtained from all participants.”.
If a manuscript does not involve such issue, please state “Not applicable.” in this section.
Consent to Publication
Authors must obtain the consent for publication from the participants in cases where manuscripts involve the privacy issues, like showing an individual’s details (images or videos). Such documents are not required at submission, but they must be available if requested. Authors should state “Informed consent to publication was obtained from relevant participants.”.
If a manuscript does not involve such issue, please state “Not applicable.” in this section.
Availability of Data and Materials
Authors are encouraged to provide details on how to access data sets supporting their findings where appropriate, such as links to publicly archived datasets.
Examples of appropriate public repositories are included as suggestions.
DNA/RNA Sequence: Genbank, Genome, BankIt, Sequence Read Archive (SRA), European Nucleotide Archive (ENA), DNA DataBank of Japan (DDBJ).
Protein Sequence: Uniprot Knowledgebase (UniprotKB).
Genetic polymorphisms: dbSNP, the Database of Genomic Variants Archive (DGVa), or the Database of Genomic Structural Variation (dbVAR).
Sequencing Data/Microarray Data: NCBI Gene Expression Omnibus (GEO) or ArrayExpress.
Structures of Macromolecules: Worldwide Protein Data Bank, Protein Data Bank in Europe, EMDataBank.
Structures of Small Molecules: Cambridge Structural Database (CSD), PubChem.
Examples for how to write this statement:
★ Datasets are in a publicly accessible repository:
The datasets [GENERATED/ANALYZED] for this study can be found in the [NAME OF REPOSITORY] [LINK].
★ Datasets are available on request:
The raw data supporting the conclusions of this manuscript will be made available by the authors, without undue reservation, to any qualified researcher.
★ All relevant data is contained within the manuscript:
All datasets [GENERATED/ANALYZED] for this study are included in the manuscript and the supplementary files.
★ The datasets request access:
The datasets for this manuscript are not publicly available because: [VALID REASON]. Requests for accessing the datasets should be directed to [NAME, EMAIL].
★ Data has been obtained from a third party:
The data analyzed in this study was obtained from [SOURCE]. Requests for access to these datasets should be directed to [NAME, EMAIL].
★ No datasets were generated for this study:
Not applicable.
It is not always possible to share research data publicly, for instance when individual privacy could be compromised. Authors who cannot share their data should state that the data will not be shared and explain why.
Funding
All sources of funding should be declared by naming financially supporting bodies followed by any associated grant numbers in square brackets. Authors must describe the role of the study sponsor(s) in the study design; in the collection, analysis and interpretation of the data; in the writing of the report; and in the decision to submit the paper for publication, if any. If not, authors should state “The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.”.
If a manuscript does not involve any funding, please state “Not applicable.” in this section.
Copyright
A declaration “© The Author(s) YEAR.” will be added to each article.
References
Authors must cite relevant literature to support any statements in their manuscripts that rely on external sources of information. All references must be closely related to the content of the article, and all cited data must be traceable to their original sources.
In-Text Citations
References should be listed in the order in which they appear in the text. The reference number should be in square brackets in the text.
Do not include references in the abstract.
Make sure the parts of the manuscript are in the correct order before ordering the citations.
References List
The reference list must be accurate, with correct information, fully cited, and arranged in ascending order.
List the first six authors, followed by et al.
Abbreviations of journals should be provided on the basis of Index Medicus.
The endnote style of the journal can be downloaded at here.
The journal adopts the references outlined by U.S. National Library of Medicine. Examples are shown below. For other types, please refer to U.S. National Library of Medicine.
Source | Example |
Standard journal article | Rose ME, Huerbin MB, Melick J, Marion DW, Palmer AM, Schiding JK, et al. Regulation of interstitial excitatory amino acid concentrations after cortical contusion injury. Brain Res. 2002;935:40-6. |
Halpern SD, Ubel PA, Caplan AL. Solid-organ transplantation in HIV-infected patients. N Engl J Med. 2002;347:284-7. |
Organization as author | Diabetes Prevention Program Research Group. Hypertension, insulin, and proinsulin in participants with impaired glucose tolerance. Hypertension. 2002;40:679-86. |
Both personal authors and organization as author | Vallancien G, Emberton M, Harving N, van Moorselaar RJ; Alf-One Study Group. Sexual dysfunction in 1,274 European men suffering from lower urinary tract symptoms. J Urol. 2003;169:2257-61. |
Article not in English | Ellingsen AE, Wilhelmsen I. Sykdomsangst blant medisin- og jusstudenter. Tidsskr Nor Laegeforen. 2002;122:785-7. Norwegian. |
Volume with supplement | 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. |
Article published electronically ahead of the print version | Yu WM, Hawley TS, Hawley RG, Qu CK. Immortalization of yolk sac-derived precursor cells. Blood. 2002;[Epub ahead of print]. |
Forthcoming | Tian D, Araki H, Stahl E, Bergelson J, Kreitman M. Signature of balancing selection in Arabidopsis. Proc Natl Acad Sci U S A. Forthcoming 2002. |
Preprints | Alvarez R. Near optimal neural network estimator for spectral x-ray photon counting data with pileup. arXiv:1702.01006v1 [Preprint]. 2017 [cited 2017 Feb 9]: [11 p.]. Available from: https://arxiv.org/abs/1702.01006 |
Books | Murray PR, Rosenthal KS, Kobayashi GS, Pfaller MA. Medical microbiology. 4th ed. St. Louis: Mosby; 2002. |
Gilstrap LC 3rd, Cunningham FG, VanDorsten JP, editors. Operative obstetrics. 2nd ed. New York: McGraw-Hill; 2002. |
Breedlove GK, Schorfheide AM. Adolescent pregnancy. 2nd ed. Wieczorek RR, editor. White Plains (NY): March of Dimes Education Services; 2001. |
Chapter in a book | 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. |
Conference paper | Christensen S, Oppacher F. An analysis of Koza’s computational effort statistic for genetic programming. In: Foster JA, Lutton E, Miller J, Ryan C, Tettamanzi AG, editors. Genetic programming. EuroGP 2002: Proceedings of the 5th European Conference on Genetic Programming; 2002 Apr 3-5; Kinsdale, Ireland. Berlin: Springer; 2002. pp. 182-91. |
Homepage/Web site | eatright.org [Internet]. Chicago: Academy of Nutrition and Dietetics; c2016 [cited 2016 Dec 27]. Available from: https://www.eatright.org/ |
Supplementary Materials (Optional)
Accompanying the manuscripts, the additional data and information must be uploaded as supplementary materials. These contents can be accessed by certain links instead of direct presentation in the text. Authors should make sure that:
★ All files must be submitted separately and named clearly (e.g., Supplementary Figure 1, Supplementary Table 1, Supplementary Video 1);
★ The file formats are acceptable as follows: data sheet (word, excel, csv, cdx, fasta, pdf or zip files), presentation (powerpoint, pdf or zip files), image (cdx, eps, jpeg, pdf, png or tiff), table (word, excel, csv), audio (mp3, wav or wma) or video (avi, flv, mov, mp4 or wmv);
★ All information of the materials must be clearly displayed;
★ Supplementary figures and tables should comply with the requirements of figures and tables in the main text;
★ The video and audio should meet the requirements in Multimedia Files;
★ Supplementary materials should be cited in the main text in numeric order (e.g., Supplementary Figure 1, Supplementary Figure 2, Supplementary Table 1, Supplementary Table 2).