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Allison JW, James CA, Arnold GL, Stine KC, Becton DL, Bell JM.Allison JW, et al. Among authors: stine kc.Pediatr Radiol. 1998 Apr;28(4):237-40. doi: 10.1007/s002470050340.Pediatr Radiol. 1998.PMID: 9545478Clinical Trial.