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SubstancePoisoning, Accidental (unintentional)Poisoning, Intentional self-harmPoisoning, AssaultPoisoning, UndeterminedAdverse effectUnderdosing
Nitric
    acid (liquid)T54.2X1T54.2X2T54.2X3T54.2X4
        vaporT59.891T59.892T59.893T59.894
    oxide (gas)T59.0X1T59.0X2T59.0X3T59.0X4