All manuscripts must be submitted electronically via the journal's online platform. Authors must register with the journal or, if already registered, they can log in to start the following five-step process:

Step 1: Start

• Language of submission: you must select the language (Spanish or English) in which the paper is written.
• Section will indicate if the manuscript is sent for consideration in any of the journal's monographs, in which case it must have been pre-selected following the procedure established by the editorial team. Other papers should be sent by marking the articles section.
• Checklist, all options should be checked, so it is important that the authors read it carefully to ensure that the format requirements of the journal are met.
• Comments for the editorial team, the authors may include any comments they deem necessary.
• Accept the copyright statement.

Tab 2: Upload the submission.

You must upload here all the necessary files (manuscript, figures, additional material, etc.). to do so, you must select the option “Add file”. Once the file is uploaded to the platform where it is indicated “What type of file is it?” you must indicate if it is the “Article text”, i.e. the main manuscript document masked and in case it is not, select “Other” and indicate which document has been included. In order to add the other required files, select the Add file option on the right side of the screen. Remember that three files must be uploaded: editorial team letter, main page and masked manuscript.

Tab 3: Enter metadata.

• Title/subtitle/prefix: the title must be in both English and Spanish. To add both languages, clicking on the text box will display both languages (when one of the two languages is not complete, the globe icon will be red; if both languages are complete, the icon will be green).The subtitle is optional and, if incorporated, it is not necessary to include a colon (“:”) at the end of the title.The prefix is also optional and can be added to the title.If added, the subtitle and prefix must also be included in Spanish and English.
• Abstract: it should be included in English and Spanish.
• Keywords (3 to 5): should be entered separately (type enter after each keyword for the system to incorporate it), both in English and Spanish (pay attention to the globe icon: it should be green).
• Authorship should include the information of the authors (full name), the affiliation (institution, city and country), and the persistent ORCID identifier of all authors. Use the “Add Contributor” button to include new persons.
• Sources of funding: if the work has received funding for its realization or the data are part of a funded study, this should be indicated.The format for indicating funding sources is as follows:This work has been funded by NAME PROGRAM OR INSTITUTION [grant numbers XXXX, YEAR] (web link if available). If no funding has been provided for the research, state: “This research has not received any specific grants from funding agencies in the public, commercial or non-profit sectors”.

• Citations: references should be included, in alphabetical order, each on one line. All references should include the DOI in the format https://doi.org/xxx (it is recommended to locate it is the original source or by using CrossRef's metadata search tool). This information is crucial for bibliometric indicators, so please cooperate as much as possible. Please note that if, during the review process, references undergo changes, they should be modified both in the manuscript and on the web page once it is accepted.