title: Why are direct comparisons of subcutaneous and sublingual immunotherapy so rare?
authors: Scientific and Medical Department, Stallergenes, Milan, Italy. Electronic address: ffrati@stallergenes.it.
authors: Franco
authors: F
authors: Frati
authors: Scientific and Medical Department, Stallergenes, Milan, Italy.
authors: Ilaria
authors: I
authors: Dell'Albani
authors: Allergy/Pulmonary Rehabilitation, ICP Hospital, Milan, Italy.
authors: Cristoforo
authors: C
authors: Incorvaia
mesh_terms: D003888:Desensitization, Immunologic / Q000379:methods*; D006801:Humans; D006255:Rhinitis, Allergic, Seasonal / Q000628:therapy*