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Contributors AD: planning, reporting of the work described in the article. NA: conduct of the work described in the article. WKrir: reporting of the work described in the article. WKhechine: conduct of the work described in the article. AH: conduct of the work described in the article. HB: conduct of the work described in the article. NG: reporting of the work described in the article. HM: responsible for the overall content as guarantor. SZ: responsible for the overall content as guarantor. OZ: conduct of the work described in the article.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Patient consent for publication Not required.
Ethics approval The study was approved by the ethics committee of the faculty of medicine of Monastir (Tunisia). I/D: IORG 0009738 n n:44/OMB 09900279.
Provenance and peer review Not commissioned; internally peer reviewed.