Kurath-Koller, S; Noessler, N; Pichler, G; Höller, N. Functional 2:1 AV block in a preterm. Arch Dis Child Fetal Neonatal Ed. 2022; 107(5):564 Doi: 10.1136/archdischild-2021-321741 Web of Science PubMed FullText FullText_MUG