title: Entering our twentieth year and still growing!
authors.affiliation: Psychiatry and Behavioural Sciences, University of Washington, P.O. Box 356560, Seattle, WA 98195-6560, USA. Electronic address: vitiello@u.washington.edu.
authors.forename: Michael V
authors.initials: MV
authors.lastname: Vitiello
authors.affiliation: Faculté de Médecine, Université Louis Pasteur, Rue Kirschleger, F-67000 Strasbourg, France. Electronic address: krieger.jean@laposte.net.
authors.forename: Jean
authors.initials: J
authors.lastname: Krieger
mesh_terms: D035843:Biomedical Research; D006801:Humans; D010506:Periodicals as Topic; D012890:Sleep