Declaration of originality. This form contains the declaration of originality and copyright terms. The corresponding author must submit the signed and scanned form separate from the manuscript in the online OJS system. Download here.
Competing interests. Every listed author must provide a competing interests statement. We suggest the ICMJE Form for Disclosure of Potential Conflicts of Interest. All forms must be submitted into the system together with the blinded manuscript. The forms will not be published in the journal, but the corresponding published author should provide them if requested by readers. Find here.
Consent to publish form. This form must be signed by the patient or tutor in case reports. Download here.
Ethics approval. Institutional ethics committee letter of approval or certificate of approval, for primary studies.
Details of study funding (especially in primary studies).
Protocol registration number (clinical trials and observational studies).
Cover letter and publication ethics of the manuscript addressed to the editor-in-chief with information that the authors consider necessary to communicate to the editors, including background of previous or related publications (e.g. prior publication as thesis in an institutional repository or congress abstract presentation), or any information that the editors must be aware of.