1 Division of Cardiology, Section of Cardiac Electrophysiology, University of California, San Francisco, San Francisco, California, USA.
2 Arrhythmia and Electrophysiology Department, Biocor Institute, Nova Lima, Brazil.
3 Department of Anatomy and Cell Biology, Universidad de Extremadura, Badajoz, Spain.
4 Biosciences Institute, Newcastle University, Newcastle upon Tyne, United Kingdom.
5 Division of Cardiology, Section of Cardiac Electrophysiology, University of California, San Francisco, San Francisco, California, USA. Electronic address: https://twitter.com/MelScheinman.
6 Division of Cardiology, Section of Cardiac Electrophysiology, University of California, San Francisco, San Francisco, California, USA. Electronic address: Henry.Hsia@ucsf.edu.