Authorship :
All authors declared to have contributed in the following manner:
1) Substantial contributions to the conception and design or the
acquisition, analysis, or interpretation of the data.
2) Substantial contributions to the drafting of the articles or critical
revision for important intellectual content.
3) Final approval of the version to be published.
4) Agreement to be accountable for all aspects of the work in ensuring
that questions related to the accuracy or integrity of any part of the
article are appropriately investigated and resolved.