1. INSERM Unit 970, Cardiovascular Epidemiology, Paris, France (N.K., E.M., M.T., J.-P.E., C.S., X.J.).
2. Cardiology Department, European Georges Pompidou Hospital—APHP, Paris, France (N.K., E.M., C.S., X.J.).
3. Faculty of Medicine, Paris Descartes University, France (N.K., E.M., M.T., J.-P.E., C.S., X.J.).
4. Sudden Death Expertise Center, Paris, France (N.K., E.M., M.T., J.-P.E., C.S. X.J.).
5. Regional Health Agency of Ile-de-France, Paris, France (S.B., M.M., A.L.).
6. Cardiology Department, Institut Cardiovasculaire Paris Sud, Massy, France (H.B.).
7. Cardiology Department, Institut Mutualiste Montsouris, Paris, France (C.C.).
8. Cardiology Department, Institut Cardiovasculaire Paris Sud, Quincy sous Sénart, France (P.G.).
9. Cardiology Department, Bichat Hospital—APHP, Paris, France (J.-M.J.).
10. SAMU 77, Melun Hospital, France (V.P.).
11. SAMU 94, Mondor Hospital—APHP, Créteil, France (T.B.).
12. SAMU 95, Pontoise Hospital, France (F.D.).
13. SAMU 92, Garches Hospital—APHP, France (G.L.B.).
14. SAMU 75, Necker Hospital—APHP, Paris, France (L.L.).
15. SAMU 91, Sud Francilien Hospital, Corbeil-Essonnes, France (B.S.).
16. Fire Brigade of Paris, France (A.A.).
17. SAMU 93, Avicenne Hospital—APHP, Bobigny, France (F.L.).
18. SAMU 78, Versailles Hospital, Le Chesnay, France (Y.L.).