American Academy of Sleep Medicine -  http://www.aasmnet.org/

National Sleep Foundation - http://www.sleepfoundation.org

American Insomnia Association - http://www.americaninsomniaassociation.org

American Sleep Apnea Association (ASAA) - http://www.sleepapnea.org/

Awake In America - http://www.awakeinamerica.org/

Narcolepsy Network - http://www.narcolepsynetwork.org/

Pulmonary Hypertension Association (PHA) - http://www.phassociation.org

Restless Legs Syndrome (RLS) Foundation - http://www.rls.org/