Erratum to: Cardiac Surgery in Germany during 2014: A Report on Behalf of the German Society for Thoracic and Cardiovascular Surgery [Thorac Cardiovasc Surg 2015; 63(04): 258–269] - Beckmann, Andreas; Funkat, Anne-Kathrin; Lewandowski, Jana; Frie, Michael; Ernst, Markus; Hekmat, Khosro; Schiller, Wolfgang; Gummert, Jan F.; Cremer, Joachim Thomas (The Thoracic and Cardiovascular Surgeon, 2015)