Influence of Cf-VAD Implantation on the Frailty Status of Advanced Heart Failure Patients - Roehrich, L.; Suendermann, S.; Just, I.; Fernandes, L. Kopp; Knierim, J.; Potapov, E.; O'brien, B.; Falk, V.; Schönrath, F. (The Thoracic and Cardiovascular Surgeon, 2022)