Received: 12 June 2019
Accepted: 15 July 2019
First Online: 17 July 2019
Ethics approval and consent to participate
: Ethical clearance was obtained from the Senate Research and Publications Committee of Muhimbili University of Health and Allied Sciences. Permission to conduct the study was obtained from MNH authority as per hospital management protocols. A written informed consent was obtained from participants before recruiting them into our study.
: Not applicable.
: The authors declare that they have no competing interests.