1. Hearing Loss in Adults
2. WHO. Addressing the rising prevalence of hearing loss. 2018. https://apps.who.int/ iris/bitstream/handle/10665/260336/9789241550260-eng.pdf?sequence=1&ua=1.
3. WHO. World report on hearing: executive summary. 2021. https://cdn.who.int/media/docs/default-source/documents/health-topics/deafness-and-hearing-loss/world-report-on-hearing/wrh-executive-summary.en.pdf?sfvrsn=feb8d533_30&download=true.
4. Statistics South Africa. Census 2011: profile of persons with disabilities in South Africa. 2011. http://www.statssa.gov.za/publications/Report-03-01-59/ Report-03-01-592011.pdf.
5. Prevalence and causes of hearing impairment in Africa