Authors’ contribution:
1. Have made substantial contributions to conception and design, or
acquisition of data, or analysis and interpretation of data : Manel
Moalla, Salwa Nechi, Amina Bani, Aicha Elloumi, Sana Jemal
2. Been involved in drafting the manuscript or revising it critically
for important intellectual content: Amal Khsiba, Manel Moalla
3. Given final approval of the version to be published. Each author
should have participated sufficiently in the work to take public
responsibility for appropriate portions of the content : Mohamed
Moussaddek Azouz
4. Agreed to be accountable for all aspects of the work in ensuring that
questions related to the accuracy or integrity of any part of the work
are appropriately investigated and resolved : Amal Khsiba, Manel Moalla,
Mohamed Moussaddek Azouz