title: Is macrophage activation syndrome a new entity?
authors.forename: B H
authors.initials: BH
authors.lastname: Athreya
mesh_terms: D001171:Arthritis, Juvenile; D015614:Histiocytosis / Q000145:classification* / Q000175:diagnosis; D006801:Humans; D008262:Macrophage Activation / Q000276:immunology / Q000502:physiology*; D013577:Syndrome