Received: 30 January 2020
Accepted: 12 May 2020
First Online: 19 May 2020
Ethics approval and consent to participate
: This study was approved by the Hospital Management of DRRH and the Tanzanian National Institute for Medical Research (NIMR/HQ/R.8a/vol. IX/1927). All enrolled patients provided written informed consent. All data were anonymized.
: Not applicable.
: The authors declare that they have no competing interests.