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Hampel FC Jr, Ratner PH, Amar NJ, van Bavel JH, Mohar D, Fairchild CJ, Wall GM, Brubaker MJ, Drake M, Crenshaw KM.Hampel FC Jr, et al. Among authors: van bavel jh.Allergy Asthma Proc. 2006 May-Jun;27(3):202-7. doi: 10.2500/aap.2006.27.2862.Allergy Asthma Proc. 2006.PMID: 16913262Clinical Trial.