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Table 1

From: Failure of bacterial filters to reduce respiratory infection incidence

      Number PN, TB  
  Number PN per Number TB per Number TC per Number PN and TB and TC per Number Ex events
  1000 MV-days 1000 MV-days 1000 MV-days per 1000 MV-days 1000 MV-days per 1000 MV-days
BF 25.38 10.15 3.38 35.53 38.91 5.07
No BF 19.30 6.43 11.58 25.73 37.32 3.86
P No S No S No S No S No S No S