Assistive Technology Industry Association (ATIA) - https://www.atia.org/home/at-resources/what-is-at/
Rehabilitation Engineering and Assistive Technology Society of North America (RESNA) - https://www.resna.org/
American Occupational Therapy Association (AOTA) - https://www.aota.org/
Occupational Safety and Health Administration (OSHA) - https://www.osha.gov/ergonomics