title: The chronic fatigue syndrome--one entity or many?
authors.forename: M N
authors.initials: MN
authors.lastname: Swartz
mesh_terms: D005221:Fatigue / Q000209:etiology*; D006566:Herpesviridae Infections / Q000150:complications; D004854:Herpesvirus 4, Human; D006801:Humans; D007239:Infections / Q000150:complications; D013577:Syndrome; D014777:Virus Diseases / Q000150:complications