MitraClip Implantation: A Word of Caution Regarding an All Too Liberal Indication and Delayed Referral to Surgery in Case of Failure - Ostovar, R.; Claus, T.; Hartrumpf, M.; Erb, M.; Zytowski, M.; Schröter, F.; Laux, M.; Albes, M. J. (The Thoracic and Cardiovascular Surgeon, 2019)