Received: 12 July 2019
Accepted: 3 September 2019
First Online: 6 September 2019
Ethics approval and consent to participate
: This study was conducted after the approval of the Ifakara Health Institute Institutional Review Board (IHI/IRB Certificate #029-2016) and the National Medical Review Board of Tanzania (NIMR/HQ/R.8a/Vol.IX/2374). Permission to conduct the study was also obtained from the Commission Cantonale D’éthique De La Recherche Sur L’être Humain (Cer-Vd) in Switzerland. Samples were collected after written consent, which included a brief description about the procedure and the importance of the study, was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.