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Authors are invited to make a submission to this journal. All submissions will be assessed by an editor to determine whether they meet the aims and scope of this journal. Those considered to be a good fit will be sent for peer review before determining whether they will be accepted or rejected.
Before making a submission, authors are responsible for obtaining permission to publish any material included with the submission, such as photos, documents and datasets. All authors identified on the submission must consent to be identified as an author. Where appropriate, research should be approved by an appropriate ethics committee in accordance with the legal requirements of the study's country.
An editor may desk reject a submission if it does not meet minimum standards of quality. Before submitting, please ensure that the study design and research argument are structured and articulated properly. The title should be concise and the abstract should be able to stand on its own. This will increase the likelihood of reviewers agreeing to review the paper. When you're satisfied that your submission meets this standard, please follow the checklist below to prepare your submission.
EndoAr publishes original articles in clinical and basic research, reviews, case reports and case series, and letters to the editor, with the aim of disseminating and promoting knowledge in endocrinology, diabetes, nutrition, and metabolism.
Manuscripts must be prepared using Microsoft Word, A4 page layout with margins of at least 20 mm, single spacing, Arial 10-point font or similar, and fully justified text.
Title page
The first page must include: (a) Article type, (b) Full title of the manuscript in Spanish and English, (c) Short running title, (d) Full names of the authors —with the surname underlined, (e) Institutional affiliation of each author, (f) ORCID (https://orcid.org/) and email address for each author, (g) Corresponding author, (h) Conflict of interest statement, (i) Author contribution statement, (j) Funding statement, (k) Ethics Committee approval (human and/or animal, as applicable)
Article types accepted in EndoAr
EndoAr includes a variety of sections designed to promote diverse scientific contributions. The main categories are:
- Original articles: clinical, translational, or experimental research articles covering any aspect of endocrinology, diabetes, nutrition, and metabolism. Maximum length: 4,000 words, excluding references, abstract, and figure legends. Structure: Introduction, Materials and Methods, Results, and Discussion. Structured abstract (Spanish and English): maximum 250 words. References: up to 40. Tables/Figures: maximum of 4 combined.
- Review articles, systematic reviews, and meta-analyses: critical analyses of relevant topics prepared by experts in the field. Maximum length: 6,000 words, excluding references, abstract, and figure legends. Structured abstract (Spanish and English): maximum 250 words. References: up to 60. Tables/Figures: maximum of 6 combined.
- Case reports or case series: descriptions of unusual, challenging, or illustrative cases with educational value and a brief literature review. Maximum length: 2,000 words, excluding references, abstract, and figure legends. Structured abstract (Spanish and English): maximum 250 words. References: up to 20. Tables/Figures: maximum of 2 combined. Maximum number of authors: 6 (exceptions may be considered).
- Letters to the editor: brief comments on published articles or opinions on topics of scientific or institutional interest. Maximum length: 1,000 words, excluding references, abstract, and figure legends. References: up to 10. Tables/Figures: maximum of 1. Maximum number of authors: 4 (exceptions may be considered).
- Other formats: editorials, short communications, consensus statements, and clinical practice guidelines, as required by the Editorial Committee. Editorials will follow the guidelines for Letters to the Editor; short communications will follow those for Case Reports; consensus statements and clinical guidelines will follow the requirements for Review Articles.
| Article type |
Maximum length (words)* |
Abstract (es/en) |
References (max.) |
Tables/ figures (max.) |
| Original articles | 4000 | 250 words, structured | 40 | 4 |
| Reviews ** | 6000 | 250 words, structured | 60 | 6 |
| Case reports & | 2000 | 250 words, structured | 20 | 2 |
| Letters to the editor # | 1000 | Not required | 10 | 1 |
* Maximum length does not include the abstract, references, or figure/table legends. ** Review articles, systematic reviews, meta-analyses, consensus statements, and clinical practice guidelines. & Case reports or clinical case series, and short communications. # Letters to the editor and editorials.
Abstract and keywords
An structured (Introduction, Methods, Results, Conclusion) abstract in Spanish and English must be included, without tables or figures, with a maximum length of 250 words. A total of 3–6 keywords must be provided in each language.
Tables and figures
Tables should be incorporated within the manuscript, whereas Figures must be placed at the end of the document with their corresponding legends. They should be essential and selfexplanatory. In Tables, no vertical lines should be used between columns, and horizontal lines should be limited to the following: top of the table, bottom of the header row, and end of the table. Figures must also be submitted separately from the text. The required file formats are .jpg, .png, or .tif, with a minimum resolution of 300 dpi. Images inserted within Word or PowerPoint will not be accepted. For Figures not created by the authors, appropriate permission for reproduction is required.
Abbreviations and symbols: Only standard abbreviations should be used, avoiding their use in the title and abstract.
References
References must follow the Vancouver style, numbered consecutively in the order in which they appear in the text, using Arabic numerals in brackets [1]. Journal names should be abbreviated according to the List of Journals Indexed for MEDLINE. All authors should be listed if there are six or fewer; if there are seven or more authors, list the first six followed by et al. Include the DOI when available.
Examples:
- Journal article:
Smith J, García M, Patel R. Bone metabolism in type 1 diabetes: a systematic review. J Clin Endocrinol Metab. 2021;106(4):1234–42. doi: 10.1210/clinem/dgaf999.
- Book:
Ross AC, Caballero B, Cousins RJ, Tucker KL, Ziegler TR. Modern Nutrition in Health and Disease. 12th ed. Philadelphia: Wolters Kluwer Health; 2017.
- Book chapter:
Rosen CJ. Osteoporosis. In: Jameson JL, De Groot LJ, editors. Endocrinology: Adult and Pediatric. 7th ed. Philadelphia: Elsevier; 2016. p. 1200–25.
- Online document:
World Health Organization. Obesity and overweight [Internet]. Geneva: WHO; 2023 [cited 2025 Jan 15]. Available from: https://www.who.int/news-room/fact-sheets/detail/obesityand-overweight
Responsibility for content
Authors are fully responsible for the content of their manuscripts, including the accuracy of the data, adherence to ethical and legal standards, and the reliability of the bibliographic references. EndoAr, its Editorial Committee, and its staff do not assume legal or scientific responsibility for the statements, interpretations, or conclusions presented in the published articles.
