[Electrocardiographic studies on pediatric patients with anemia].
D000293:Adolescent; D000740:Anemia / Q000150:complications*; D000741:Anemia, Aplastic / Q000150:complications; D000743:Anemia, Hemolytic / Q000150:complications; D000747:Anemia, Hypochromic / Q000150:complications; D001145:Arrhythmias, Cardiac / Q000209:etiology*; D002648:Child; D002675:Child, Preschool; D004562:Electrocardiography; D006801:Humans; D007223:Infant; D007938:Leukemia / Q000150:complications