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References from Double Transeptal Puncture for SAPIEN M3 Transcatheter Mitral Valve Replacement: Initial Experience, Indications, and Technique. Local targets link to admitted publications; unresolved targets remain external evidence.
10.1016/s0140-6736(25)02073-2
10.1016/s0140-6736(25)02073-2 · External reference
