1 Istituto Auxologico Italiano, IRCCS, Center for Cardiac Arrhythmias of Genetic Origin and Laboratory of Cardiovascular Genetics, 22 Via Pier Lombardo, Milan, Italy.
2 University of Arizona, College of Medicine-Phoenix Arizona and AZCERT, Inc., Oro Valley, Arizona, USA.
3 Istituto Auxologico Italiano, IRCCS, Department of Cardiovascular, Neural and Metabolic Sciences, San Luca Hospital, Milan, Italy.
4 Department of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy.