T44.6X1 - Poisoning by alpha-adrenoreceptor antagonists, accidental (unintentional) T44.6 - Poisoning by, adverse effect of and underdosing of alpha-adrenoreceptor antagonists T44.6X - Poisoning by, adverse effect of and underdosing of alpha-adrenoreceptor antagonists T44.6X1 - Poisoning by alpha-adrenoreceptor antagonists, accidental (unintentional)