BEH declaration of contribution
The BEH Editorial Board recognises the phenomena of "ghostwriting" and "guest authorship" as the serious scientific misconduct. Moreover, the eventual financial support of any research institution or other entity to the paper creation needed to be revealed in the article acknowledgments "financial disclosure". Therefore the Corresponding author must fill in and sign the BEH declaration of contribution (in case there are two authors or more) which should be submitted together with manuscript using the Online Submission form. All detected cases of scientific misconduct will be documented and the appropriate institutions and entities will be notified.