Received: 2 August 2018
Accepted: 20 September 2019
First Online: 23 October 2019
Ethics approval and consent to participate
: Local ethics approval was obtained from the joint decision of the Scientific Council of the Faculty of Health Sciences of the University of Zinder and the Advisory Technical Advisory Council of Zinder National Hospital. Data was completely anonymized. Written consent was obtained from participants.
: Consent to publish was obtained from patients. Participants gave written informed consent for their personal or clinical details along with any identifying images to be published in this study.
: The authors declare that they have no competing interests.