Electrophysiological Study With Prophylactic Pacing and Survival in Adults With Myotonic Dystrophy and Conduction System DiseaseKarim Wahbi1,2,3, MD, Christophe Meune3,4, MD, Raphaël Porcher5,6, PhD, Henri Marc Bécane1, MD, Arnaud Lazarus3,7, MD, Pascal Laforêt1, MD, Tanya Stojkovic1, MD, Anthony Béhin1, MD, Hélène Radvanyi-Hoffmann8, MD, Bruno Eymard1,2, MD, Denis Duboc1,2,3,9, MD1Neurology Department, Pitié-Salpêtrière Hospital, Paris, France 2Pierre and Marie Curie University, Paris, France 3Cardiology Department, Cochin Hospital, Paris, France 4Descartes University, Paris, France 5Biostatistics and Medical Information Technology Department, Department, Saint-Louis, Hospital, Paris, France 6Paris Diderot University, Paris, France 7InParys Clinical Research Group, Saint Cloud, France 8Molecular Genetics Department, Ambroise Paré Hospital, Boulogne, France 9Inserm, UMR 974, Paris, FranceJAMA, March 28, 2012-Vol 307, No. 12