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Shalit M, Tedeschi A, Miadonna A, Levi-Schaffer F.Shalit M, et al.J Allergy Clin Immunol. 1991 Dec;88(6):854-60. doi: 10.1016/0091-6749(91)90241-f.J Allergy Clin Immunol. 1991.PMID: 1720796Clinical Trial.