title: Invited commentary: How much do we really sleep?
authors.affiliation: Sleep Center, University of Arizona College of Medicine, Tucson, AZ, USA. squan@arc.arizona.edu
authors.forename: Stuart F
authors.initials: SF
authors.lastname: Quan
mesh_terms: D001741:Black or African American / Q000706:statistics & numerical data*; D000367:Age Factors; D002641:Chicago / Q000453:epidemiology; D006801:Humans; D017286:Polysomnography / Q000379:methods*; D012737:Sex Factors; D012890:Sleep / Q000502:physiology*; D020919:Sleep Disorders, Intrinsic / Q000191:economics / Q000208:ethnology* / Q000503:physiopathology; D012959:Socioeconomic Factors; D013997:Time Factors; D044465:White People / Q000706:statistics & numerical data*