Influence of Day Length and Physical Activity on Sleep Patterns in Older Icelandic Men and Women Influence of Day Length and Physical Activity on Sleep Patterns in Older Icelandic Men and Women Download Improvement of Cognitive and Psychomotor Performance in Patients with Mild to Moderate Obstructive Sleep Apnea Treated with Mandibular Advancement Device: A Prospective 1-Year Study Lifestyle Factors and Risk of Restless Legs Syndrome: Prospective Cohort Study