β1‐receptor polymorphisms and junctional ectopic tachycardia in children after cardiac surgery oleh Leanne Dumeny, Marut Chantra, Taimour Langaee, Benjamin Q. Duong, Daniel H. Zambrano, Frank Han, Dalia Lopez‐Colon, James F. Humma, Jonathan Dacosta, Tommie Lovato, Connie Mei, Julio D. Duarte, Julie A. Johnson, Giles J. Peek, Jeffrey P. Jacobs, Mark S. Bleiweis, Larisa H. Cavallari