1. Hôpital Privé Jacques Cartier, Institut Cardiovasculaire Paris Sud, Cardiovascular Magnetic Resonance Laboratory, Ramsay Santé, Massy, France (T.P., T.U., P.G., T.H., F.S., S.C., J.G.).
2. Division of Cardiology, Johns Hopkins University, Baltimore, MD (T.P.).
3. Siemens Healthcare France, Saint-Denis, France (S.T.).
4. Independent Biostatistician, Pérouges, France (S.M.).