Declarations

List of abbreviations
If abbreviations are used in the text they should be defined in the text at first use.

Consent for publication
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Competing interests
All financial and non-financial competing interests must be declared in this section. See our editorial policies for a full explanation of competing interests. If you are unsure whether you or any of your co-authors have a competing interest please contact the editorial office.

Funding
All sources of funding for the research reported should be declared. 

Authors' contributions
The individual contributions of authors to the manuscript should be specified in this section. 
Example: Conceptualization, I.M., A.K. and F.N.; methodology, I.M. and M.A.; investigation,V.K. and F..N.; writing (original draft), M.A.,A.B. and A.K.; writing (review and editing of the manuscript), I.M. and A.K.; visualization, M.A., K.A. and F.N.; funding acquisition,V.K, A.B. F.N; resources, A.B., V.K. and M.A.; supervision, M.A. and A.K.

Acknowledgements
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. Authors should obtain permission to acknowledge from all those mentioned in the Acknowledgements section. See our editorial policies for a full explanation of acknowledgements and authorship criteria.