Disclosures:
LM declares consulting services, and advisory boards to St. Jude Medical
(Now Abbott), Medtronic, Biotronik, Boston Scientific, Livanova and
Johnson&Johnson. JMT declares consulting services, and advisory boards
to St. Jude Medical (Now Abbott), Medtronic, Biotronik and Boston
Scientific. RS declares no conflicts of interest with the subject matter
discussed in the manuscript.