Phan, Thao Nguyen, The Huy Nguyen, Le Anh Do, and Cong Huu Nguyen. 2026. “Successful Valve-in-Valve Transcatheter Aortic Valve Implantation Using a Hydra Transcatheter Aortic Valve in a Patient With Severe Degeneration of a Surgical Bioprosthesis: A Case Report”. The Vietnam Journal of Cardiovascular and Thoracic Surgery 54 (January):77 - 84. https://doi.org/10.47972/vjcts.v54i.1634.