In the article, “Development of the Cardiac Conduction Tissue in Human Embryos Using HNK-1 Antigen Expression: Possible Relevance for Understanding of Abnormal Atrial Automaticity,” by Blom et al, which appeared in the February 16, 1999, issue of the journal (Circulation. 1999;99:800–806), the title of reference No. 20 was incorrect. The reference should have read:
20. Racker DK. Sinoventricular transmission in 10 mM K+ by canine atrioventricular nodal inputs: superior atrionodal bundle and proximal atrioventricular bundle. Circulation. 1991;83:1738–1753.