DOI: 10.1055/s-00046128

Journal of the American Academy of Audiology

References

World Health Organisation (WHO) 2014
Fact sheet 300: Deafness and hearing impairment.

http://0-www.who.int.innopac.up.ac.za/mediacentre/factsheets/fs300/en/ . Accessed June 8, 2015

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