General instructions

Text Formatting
All manuscripts should be submitted in a Word format, they should be single column and 1.5 spaced. Margins should be one inch at the top, bottom and sides of the page. Font size should be 11-pt or 12-pt, standard font in ‘Arial’ or ‘Times New Roman’ typeface. Manuscripts should be formatted in full justified paragraphs and headings should be left-aligned. Maths should be editable text.

Title Page
The Title page should list the title of the article and suggestions for a short running title of no more than 60 characters (including spaces). Also include the authors names, affiliations and contact details including email address for the corresponding author. Affiliations should contain each author’s department, institution (Institute, University), city, country.
The Title of the article should be clear, concise and highlighting the research topic. It should not include rhetorical questions, literary language, quotations and special symbols.
Authors cannot change the title of their article once it is accepted for publication, apart from very minor corrections.

Abstract
Authors are asked to supply a structured abstract of 250 words. For research articles, systematic reviews and brief reports, the abstract is limited to 250 words and should be structured as follows: Introduction, Methods, Results, and Conclusions. Abstracts for narrative reviews, study protocols and methodology papers are unstructured. Letters do not have an abstract.

Keywords
Include up to six keywords that describe your paper for indexing and for web searches of your manuscript.

Main Text
Research Papers, Systematic Review Papers and Short Reports sections are: Introduction, Methods, Results, Discussion, and Conclusions. Narrative Review Papers are not necessarily structured. It is suggested though to include the sections Introduction, Developments and Conclusion. Study Protocols consist of Introduction, Methods, Discussion, and Conclusions. Methodology Papers should consist of Introduction, Methodological approach, Case studies or practical examples, Discussion, Conclusions.

Use the guidelines below to structure these sections:
1. A short introduction which should end with the study’s aims. The introduction should state clearly the objective of the paper as well as the context of the research or analysis.
2. A methods section which should describe the study design, setting, participants, measures, variables and statistical analysis performed. This section should also include information on the study’s ethics procedures.
3. A results section, which should describe the study’s main findings and important aspects within the tables.
4. A discussion section, which should include a discussion of the study’s main findings, comparisons with other studies, potential policy implications, the study’s strengths and limitations.
5. A conclusions section, which should be short, concise and based on the results of the current study. General conclusions that do not stem from the manuscript's results should be avoided.

Acknowledgements
This section is for acknowledging individuals and institutions whose support the authors wish to mention (it is not compulsory). Please acknowledge anyone who contributed towards the article who does not meet the criteria for authorship including anyone who provided professional writing services or materials. The Acknowledgements section should be kept to a minimum.

Declaration Of Interests
Declare any competing interests for each author. Pneumon adheres to the International Committee of Medical Journal Editors (ICMJE) Recommendations for the Conduct, Reporting, Editing and Publication of Scholarly Work in Medical Journals. The author names on the ICMJE forms should be identical to the names in the manuscript. The ICMJE Conflict of Interest form is used by E.U. European Publishing.

Funding
All sources of funding for the research reported should be declared. The role of the funding body in the design of the study and collection, analysis, and interpretation of data and in writing the manuscript should be declared.
The sentence should begin: "This work was supported by". Proposal numbers should be complete and accurate and provided in parentheses as follows: "(proposal number xxxx)"

Ethical Approval and Informed Consent
All research involving human objects must have been reviewed and approved by an ethics committee prior to submission. Authors are requested to include ethical approval and informed consent detailed information in the "only for editors" section during their submission.

Data availability and sharing
ΕΛΕΥΘΩ encourages data sharing and suggests to authors to make their underlying data available for other researchers when possible, by choosing for archiving the appropriate public repository by case. We ask all authors to include a data availability statement by choosing one of the following options during their submission:
1. The data supporting this research are available from the author(s) on reasonable request.
2. The data supporting this research cannot be made available for privacy or other reasons. [please give the reasons if possible]
3. The data supporting this research are available from the following sources: [link] OR [DOI]
4. The data supporting this research can be found in the Article appendix or supplementary content.
5. Data sharing is not applicable to this article as no new data were created.

Authors' contributions
The individual contributions of authors to the manuscript should be specified in this section. Guidance and criteria for authorship can be found in our editorial policies. The authors have the option to give a brief outline of their contribution. Please use initials to refer to each author's contribution in this section.
Group authorship (for manuscripts involving a collaboration group): If you would like the names of the individual members of a collaboration Group to be searchable through their individual PubMed records, please ensure that the title of the collaboration Group is included on the title page and in the submission system and also include collaborating author names as the last paragraph of the "Acknowledgements" section. Please add authors in the format First Name, Middle initial(s) (optional), Last Name. You can add institution or country information for each author if you wish, but this should be consistent across all authors.

Double blind peer-review policy
All papers submitted for publication are assessed with the mutual anonymity rule as to the names of reviewers and authors observed.

Proofs
Minor changes to the manuscript will only be accepted. Beyond minor corrections, there will be no author changes accepted that are outside the style of the journal. Rewording, restructuring or changes of style to the manuscript will not be accepted.

Article download statistics
After publication, article download statistics are freely available to all readers via the "stats" tab next to each article.