Author must indicate that, their work was done according to the Declaration of Helsinki principles (https://www.wma.net/policies-post/wma-declaration-of-helsinki-ethical-principles-for-medical-research-involving-human-subjects/), and a formal review and approval by an appropriate institutional research and ethics committee are required.

Consent: In clinical trials, an informed consent must be provided by the patient or his/her guardian and the work must be compliant with the guidelines of the International Committee of Medical Journal Editors (www.icmje.org).

Confidentiality must be guaranteed and it is the responsibility of the authors to ensure that, patients' names, IDs, or hospital numbers not be violated in any section of their manuscript (including figures).