title: Severity of Illness and Treatment Thresholds: Managed-Care Strategies in Sleep Medicine.
abstract: The objectives of this article are: (1) to distinguish functional from physiological criteria for illness; (2) to articulate threshold approach to our diagnostic strategies; and (3) to list the functions of sleep medicine that give valued patient care systems.
authors.affiliation: Department of Medicine, Case Western Reserve University, VAMC, Cleveland, Ohio.
authors.forename: Kingman P.
authors.initials: KP
authors.lastname: Strohl