Authors should mention all funding sources.

This section contains one or more statements that specify

●      (a) contributions that need acknowledgment but do not justify authorship

●      (b) acknowledgment of technical help

●      (c) acknowledgments of financial and material support, specify the nature of the support

●      (d) financial relationships that may pose a conflict of interest.



Author contributions

Each person who contributed to the manuscript should be listed. Any person who cannot be shown to have made a substantial contribution to the article cannot be listed as an author in the final version. A substantive contribution includes one or more of the following: conception and design (xx, x), data analysis and interpretation (xx,xx,xx), manuscript draft (xx), critical revision of the manuscript (xx,xx,xx), final approval of the manuscript (xx).