1. Prevention of Blindness and Deafness: Global Estimates on Prevalence of Hearing Losshttps://www.who.int/pbd/deafness/estimates/en/
2. Prevention of Deafness and Hearing Loss 2017. WHA7.13, Agenda Item 15.8http://apps.who.int/gb/ebwha/pdf_files/WHA70/A70_R13-en.pdf
3. Noise Induced Hearing Loss (NIHL) 2018, A Public Health Partnership for Prevention of Noise-Induced Hearing Loss and Tinnitushttp://www.dangerousdecibels.org/education/information-center/noise-induced-hearing-loss/
4. Hearing Matters: Why Urgent Action Is Needed on Deafness, Tinnitus and Hearing Loss Across the UK 2015,2015