Antoine Lafont1, Yi Yang2. 1. Université Paris-Descartes, Paris, France; Cardiology Department, European Georges Pompidou Hospital, Assistance publique-Hôpitaux de Paris, 75908 Paris Cedex 15, France; Hydrodynamics Laboratory (LadHyX), CNRS UMR7646, Ecole Polytechnique, Palaiseau, France. Electronic address: antoine.lafont@inserm.fr. 2. Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.