1 University of California Los Angeles (UCLA) Cardiac Arrhythmia Center, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA; Neurocardiology Research Program of Excellence, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA; Molecular, Cellular & Integrative Physiology Program, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA.
2 University of California Los Angeles (UCLA) Cardiac Arrhythmia Center, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA; Neurocardiology Research Program of Excellence, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA; Molecular, Cellular & Integrative Physiology Program, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA; Neuroscience Interdepartmental Program, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA.
3 University of California Los Angeles (UCLA) Cardiac Arrhythmia Center, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA. Electronic address: ebuch@mednet.ucla.edu.