Okoué, Raphael
Calabrese, Daniela
Nzé, Pascal
Msika, Simon
Keita, Hawa http://orcid.org/0000-0001-9314-1424
Article History
First Online: 11 January 2018
Compliance with Ethical Standards
: The study was approved by the ethics committee of the Hôpitaux Universitaires Paris Nord Val de Seine (HUPNVS), Paris 7 University (Institutional Review Board reference 13-001). Informed consent was obtained for all individual participants included in the study.
: The authors declare that they have no conflicts of interest.