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Combination of omalizumab and specific immunotherapy is superior to immunotherapy in patients with seasonal allergic rhinoconjunctivitis and co-morbid seasonal allergic asthma.
Kopp MV, Hamelmann E, Zielen S, Kamin W, Bergmann KC, Sieder C, Stenglein S, Seyfried S, Wahn U; DUAL study group. Kopp MV, et al. Clin Exp Allergy. 2009 Feb;39(2):271-9. doi: 10.1111/j.1365-2222.2008.03121.x. Epub 2008 Oct 30. Clin Exp Allergy. 2009. PMID: 19016798 Clinical Trial.