General (Sleep Related):
- American Academy of Sleep Medicine
- National Sleep Foundation
- National Center on Sleep Disorders Research
- National Sleep Foundation-Waking America to the Importance of Sleep
Narcolepsy (with Cataplexy):
- Narcolepsy Network
- Wake Up Narcolepsy
- National Institute for Neurological Disorders and Stroke (NINDS)
- Stanford Center for Narcolepsy
- National Sleep Foundation
Idiopathic Hypersomnia/Major Somnolence Disorder:
Kleine-Levin Syndrome (KLS):