National Sleep Foundation
Nonprofit organization supporting public education, sleep-related research, and advocacy related to sleep deprivation, sleep disorders

American Tinnitus Association
ATA understands how tinnitus can impact your life - you are not alone. Find a health specialist.

Oregon Tinnitus and Hypercusis Treatment Clinic, Inc.
A Portland based treatment center that provides educational counseling, evaluation, and care of tinnitus and hypercusis, including the use of sound therapy devices.

Helpguide.org: Post-traumatic Stress Disorder (PTSD)
Symptoms, Treatment, and Self-Help

National Center for Post Traumatic Stress Disorder
Military personnel have always been confronted by the trauma of war, and this Website Section outlines the causes and symptoms, along with services and information specific for US Veterans and individuals with PTSD.

Brain Injury Assocation of America
Founded in 1980, the Brain Injury Association of America (BIAA) is an organization serving and representing individuals, families and professionals who are affected by life-altering, often devastating, traumatic brain injury (TBI).