Contributions from authors
All authors have approved the final article
Criss Koba, Chadrack KabeyA, Robert Lukamba Mbuli and Murielle Nkumuyaya: study design and planning
Benjamin Kabyla, Desiré Mashinda and Oscar Luboya Numbi: supervision
Criss Koba and Chadrack Kabeya: statistical analysis and proofreading of the article
Criss Koba and Chadrack Kabeya: documentary research and formatting of the work
Funding
This research received no external funding