Pericardiectomy and Mechanical Mitro-Aortic Valve Replacement in a Young Patient With Erdheim-Chester Disease oleh Nerea Lopez Perez, MBBS, Mathieu van Steenberghe, MD, PhD, Jörg D. Seebach, MD, Philippe Meyer, MD, Johannes Alexander Lobrinus, MD, Christoph Huber, MD, Mustafa Cikirikcioglu, MD, PhD