T44.7X4 - Poisoning by beta-adrenoreceptor antagonists, undetermined 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 T44.7X4 - Poisoning by beta-adrenoreceptor antagonists, undetermined