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Givon-Lavi N, Greenberg D, Dagan R.Givon-Lavi N, et al. Among authors: dagan r.Pediatr Infect Dis J. 2010 Aug;29(8):756-62. doi: 10.1097/INF.0b013e3181d99345.Pediatr Infect Dis J. 2010.PMID: 20661103Clinical Trial.