title: Specific immunotherapy in the U.S.A.: general concept and recent initiatives.
authors.affiliation: Greer Laboratories Inc., 639 NuWay Circle, NE, P.O. Box 800, Lenoir, NC 28645, USA.
authors.forename: Robert E
authors.initials: RE
authors.lastname: Esch
mesh_terms: D000486:Allergy and Immunology / Q000639:trends; D006801:Humans; D006967:Hypersensitivity / Q000628:therapy*; D007167:Immunotherapy / Q000639:trends*; D017410:Practice Guidelines as Topic; D055656:Prescriptions; D012955:Societies, Medical; D014481:United States