• Associated Professional Sleep Societies
• Sleep Research Society
• The Columbus Community Health Regional Sleep Disorder Centers
• Prof. Peretz Lavie Sleep Library at the Technion
• National Sleep Foundation
• American Academy of Sleep Medicine
• American Academy of Dental Sleep Medicine
• American Board of Sleep Medicine
• American Sleep Apnea Association
• American Association of Sleep Technologists
• Board of Registered Polysomnographic Technologists
• PubMed.gov – Free Search Engine for Medical Publications
• Sleep Medicine Home Page
• International Sleep Products Association
• Restless Legs Syndrome Foundation
• European Sleep Research Society
• SleepHelp.org