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De Swert LF, Van Laer KM, Verpoorten CM, Van Hoeyveld EM, Cadot P, Stevens EA.De Swert LF, et al. Among authors: stevens ea.Clin Exp Allergy. 1997 Sep;27(9):1067-76. doi: 10.1111/j.1365-2222.1997.tb01259.x.Clin Exp Allergy. 1997.PMID: 9678839