HIGHLIGHTS
- who: Hanna E. Abdalla from the multi-stage cluster sampling techniqueTwenty basic schools were randomly selected proportionally to the child population in the selected localities. Ethical approval for the study was obtained from the Research Committee of University of Khartoum-Faculty of Dentistry (HREC-5/2015), besides receiving written approvals from the Director of primary school education for each locality and the Director of each primary schools in Sudan. A written informed consent was obtained from the parents/guardians of the participants, and each child also gave assent to participate in the study. Inclusion criteria have published . . .
If you want to have access to all the content you need to log in!
Thanks :)
If you don't have an account, you can create one here.