Article History
Received: 12 May 2019
Accepted: 28 September 2019
First Online: 16 October 2019
Ethics approval and consent to participate
: Approvals from the Ministry of Health Northern Darfur State and Medical Research Review Board Al Neelain University/2007 were obtained. Following written informed consent from families were taken (Additional file InternalRef removed).
: Not applicable.
: The authors declare that they have no competing interests.