Received: 12 March 2019
Accepted: 13 June 2019
First Online: 18 June 2019
Ethics approval and consent to participate
: The institutional review board and the committee on research of the Muhimbili National Hospital (MNH) approved the study protocol. MNH administration provided permission for in-hospital follow-up. Written informed consent was obtained from patients, and patient parents or guardians when a patient was a child below the age of 18 years.
: Not applicable.
: The authors declare that they have no competing interests.