Populations at risk for sleep disturbances / Phyllis C. Zee and Alon Y. Avidan -- Sleep-disordered breathing / Suzette Sewell-Scheuermann and Barbara A. Phillips -- Insomnia / Ruth M. Benca -- Hypersomnia and narcolepsy / Timothy F. Hoban and Ronald D. Chervin -- Motor disorders of sleep and parasomnias / Alon Y. Avidan -- Circadian rhythm sleep disorders / Brandon S. Lu, Prasanth Manthena, and Phyllis C. Zee -- Sleep disorders in children / Judith Anne Owens and Katherine Finn Davis.