Received: 25 March 2017
Accepted: 11 May 2018
First Online: 15 June 2018
Ethics approval and consent to participate
: The study was approved and performed according to the local Ethical Committee of Medical Sciences (Approval n°1501/AR/MINSANTE/HLD/CM from Laquintinie Hospital and n°25/AR/MSP/DRSPLT/SSDB/HDB from District Hospital of Bonassama). Participation was voluntary and each subject involved in the study gave a written consent.
: The authors declare that they have no competing interests.
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