authors Pigeon, Wilfred R Hegel, Mark Unützer, Jürgen Fan, Ming-Yu Sateia, Michael J Lyness, Jeffrey M Phillips, Cindy Perlis, Michael L
has subject area Age of Onset Aged Cohort Studies Comorbidity Depressive Disorder, Major Female Humans Incidence Male Middle Aged Prevalence Primary Health Care Prospective Studies Risk Factors Severity of Illness Index Sleep Initiation and Maintenance Disorders