TY - GEN AU - Tseng,Elaine E TI - When valve-in-valve implantation is not sufficient: Bioprosthetic Russian dolls SN - 1097-685X PY - 2018///0725 KW - Bioprosthesis KW - Heart Valve Prosthesis KW - Heart Valve Prosthesis Implantation KW - Russia N1 - Publication Type: Editorial; Comment UR - https://doi.org/10.1016/j.jtcvs.2016.04.018 ER -