World Health Organization
Safe listening devices and systems: a WHO-ITU standard
Public Health
The American Speech-Language-Hearing Association provides details on state funding resources for audiology services and hearing aids. It also provides an audiology finder by city/town.
Safe listening devices and systems: a WHO-ITU standard
WHO on deafness and hearing loss
State Funding Resources for Audiology Services and Hearing Aids
Hearing Screening and Hearing Testing