title: Sleep as a vital sign: why medical practitioners need to routinely ask their patients about sleep.
authors.affiliation: Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA. Electronic address: grandner@upenn.edu.
authors.forename: Michael A
authors.initials: MA
authors.lastname: Grandner
authors.affiliation: Division of Pulmonary, Critical Care, and Sleep Medicine, University of California, San Diego, La Jolla, CA.
authors.forename: Atul
authors.initials: A
authors.lastname: Malhotra