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Sparks PJ, Ayars GH, Simon GE, Katon WJ, Altman LC, Johnson RL.Sparks PJ, et al. Among authors: ayars gh.Allergy Proc. 1991 Nov-Dec;12(6):389-93. doi: 10.2500/108854191779114167.Allergy Proc. 1991.PMID: 1838999