References
- World Health Organization. Chronic Disease Prevention and Management. Primary Ear and Hearing Care, Training Resource, Advanced Level, 2006. http://ftp.who.int/pbd/deafness/activities/hearing-care/en/endex.html
- World Health Organization. WHO Ear and Hearing Disorders Survey protocol for a population based survey of prevalence and causes of deafness and hearing impairment and other ear disorders. WHO/PBD/PDH 99.8 (1). Geneva, Switzerland: WHO, 1999. http://libdoc.who.int/hq/1999/WHO_PBD_PDH_99.8(1).pdf
- World Health Organization. Future Programme Developments for the Prevention of Deafness and Hearing Impairment. Report of the First Informal Consultation. WHO/PDH/97.3 Geneva Switzerland: WHO, 1997. http://whqlibdoc.who.int/hq/1997/WHO_PDH_97.3.pdf
- World Health Organization. Preventing Chronic Disease: a vital investment. Geneva, Switzerland: WHO, 2005.
- Pascolini D, Smith A. Hearing impairment in 2008: a compilation of available epidemiological studies. Int J Audiol. 2009;48:473–85.