title: When valve-in-valve implantation is not sufficient: Bioprosthetic Russian dolls.
authors.affiliation: Department of Surgery, University of California at San Francisco Medical Center (UCSF), and the San Francisco Veterans Affairs Medical Center (SFVAMC), San Francisco, Calif. Electronic address: elaine.tseng@ucsf.edu.
authors.forename: Elaine E
authors.initials: EE
authors.lastname: Tseng
mesh_terms: D001705:Bioprosthesis; D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation; D012426:Russia