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2. Varney VA, Gaga M, Frew AJ, Aber VR, Kay AB, Durham SR. Usefulness of immunotherapy in patients with severe summer hay fever uncontrolled by antiallergic drugs. BMJ 1991;302:265-9. 3. Bjorksten B. Local immunotherapy is not document for clinical use. Allergy 1994; 49:299-301. 4. Malling HJ. Sublingual immunotherapy. Clin Exp Allergy … ................
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