Updates are available Correction dated 2022-05-02

Article History

Received: 13 November 2020

Accepted: 28 March 2022

First Online: 4 April 2022

Change Date: 2 May 2022

Change Type: Correction

Change Details: A Correction to this paper has been published:

Change Details: https://doi.org/10.1186/s12889-022-13258-x

Declarations

:

: The study received ethical approval with reference number NIMR/HQ/R.8a/Vol. IX/3185 from the National Health Research Ethics Review Committee (NHRERC) of the Tanzania National Institute for Medical Research (NIMR).. Permission to conduct the study was also sought from the local authorities in the four selected regions. Informed consent for study participation was obtained from all study participants. Written informed consent was obtained from the participants who were able to read while verbal informed consent wa obtained from the participants who could not write. Informed consent for minors (below 18 years) was obtained from their parents/guardians who decided on the minors’ participation in the study. In addition to this, the minors were fully informed about the study and made aware that they were free to decide to participate on not. The consent process was approved by the ethics review committee (NHRERC). All the methods used in this study are in accordance with the principles expressed in the Declaration of Helsinki.

: Not applicable.

: The authors declare that they have no competing interest.