T39.1X1 - Poisoning by 4-Aminophenol derivatives, accidental (unintentional) T39.1 - Poisoning by, adverse effect of and underdosing of 4-Aminophenol derivatives T39.1X - Poisoning by, adverse effect of and underdosing of 4-Aminophenol derivatives T39.1X1 - Poisoning by 4-Aminophenol derivatives, accidental (unintentional)