Goldberger Jeffrey J, Buxton Alfred E
Center for Cardiovascular Innovation and Division of Cardiology, Northwestern University Feinberg School of Medicine, 251 E Huron St, Feinberg 8-503, Chicago, IL 60611, USA.
JAMA. 2013 Jun 26;309(24):2559-60. doi: 10.1001/jama.2013.6629.