Direct Flow Medical vs. Edwards Sapien 3 Prosthesis: A Propensity Matched Comparison on Intermediate Safety and Mortality. - Edlinger C; Bannehr M; Wernly B; Kücken T; Okamoto M; Lichtenauer M; Hähnel V; Reiners D; Neuss M; Butter C (Frontiers in cardiovascular medicine, 2021)