Received: 22 July 2021
Accepted: 3 January 2022
First Online: 15 January 2022
: The appropriate ethical review boards of Arsi University, Ethiopia (reference number A/U/H/S/C/120/6443/2017), the Oromia Regional Health Bureau, Ethiopia (reference number BEFO/AHBTFH/1-8/2017), and Düsseldorf University Hospital, Germany (reference number 5729) approved the study. Ethical clearance for sample transportation between Ethiopia and Germany was obtained from the National Ethical Review Board of the Ethiopian Ministry of Science and Technology (reference number 310/204/2017). Before the start of the study procedures, written informed consent to participate in the study was obtained from each study participant or, in the case of minors, from their legal guardians.
: The informed consent form signed by each study participant or, in the case of minors, the legal guardians contained consent for publication of anonymized data.
: The authors declare that they have no competing interests.