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Smith DF, Rasmussen S, Peng A, Bagwell C, Johnson C 3rd.Smith DF, et al. Among authors: bagwell c.Int J Pediatr Otorhinolaryngol. 2009 Dec;73(12):1817-20. doi: 10.1016/j.ijporl.2009.08.022. Epub 2009 Oct 9.Int J Pediatr Otorhinolaryngol. 2009.PMID: 19819032Review.