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                                    Long-term Cardiac Maintenance Programming: A SINGLE-SITE ANALYSIS OF MORE THAN 200 PARTICIPANTS  
                                
                                
                                Jeffrey W. Christle PhD,Michaela  Baumgartner MD,Otto  Zelger MD,Christoph  Lammel PhD,Bernhard  Haller PhD,Birna  Bjarnason-Wehrens PhD,Jon  Myers PhD,Larry F. Hamm PhD,Victor  Froelicher MD,Martin  Halle MD,Axel  Pressler MD