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 Level 4
 
 J - Antiinfectives for systemic useJ07 - VaccinesJ07B - Viral VaccinesJ07BF - Poliomyelitis vaccines
 
 J07BF01 - Poliomyelitis oral, monovalent live attenuatedJ07BF02 - Poliomyelitis oral, trivalent, live attenuatedJ07BF03 - Poliomyelitis, trivalent, inactivated, whole virus
 
 
 
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