T44.7X1 - Poisoning by beta-adrenoreceptor antagonists, accidental (unintentional) T44.7 - Poisoning by, adverse effect of and underdosing of beta-adrenoreceptor antagonists T44.7X - Poisoning by, adverse effect of and underdosing of beta-adrenoreceptor antagonists T44.7X1 - Poisoning by beta-adrenoreceptor antagonists, accidental (unintentional)