References

• 2002The validity of the Hospital Anxiety and Depression Scale9,760 cited
• 2002Epidemiology of insomnia: what we know and what we still need to learn3,741 cited
• 1997Cumulative Sleepiness, Mood Disturbance, and Psychomotor Vigilance Performance Decrements During a Week of Sleep Restricted to 4–5 Hours per Night2,022 cited
• 1986Modern Epidemiology 3rd edition1,724 cited
• 2002Mortality Associated With Sleep Duration and Insomnia1,614 cited
• 2001Hospital Anxiety and Depression (HAD) scale: Factor structure, item analyses and internal consistency in a large population908 cited
• 1999Nonpharmacologic Treatment of Chronic Insomnia888 cited
• 2007Comorbidity of Chronic Insomnia With Medical Problems874 cited
• 2002Place of chronic insomnia in the course of depressive and anxiety disorders873 cited
• 2003Use of sleep hygiene in the treatment of insomnia733 cited
• 1979Short and Long Sleep and Sleeping Pills660 cited
• 2003The Nord-Trøndelag Health Study 1995-97 (HUNT 2): Objectives, contents, methods and participation526 cited
• 2009The treatments of chronic insomnia: A review of benzodiazepine receptor agonists and psychological and behavioral therapies477 cited
• 2002Medical and Socio-Professional Impact of Insomnia468 cited