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Chan KH, Bluestone CD, Tan LS, Reisinger KS, Blatter MM, Fall PA.Chan KH, et al.Pediatr Infect Dis J. 1993 Jan;12(1):24-8. doi: 10.1097/00006454-199301000-00007.Pediatr Infect Dis J. 1993.PMID: 8417421Clinical Trial.