TY - JOUR AU - Kalmar, P; Irrgang, E TI - Cardiac surgery in Germany during 2001: a report by the German Society for Thoracic and Cardiovascular Surgery JO - Thorac Cardiovasc Surg IS - 6 VL - 50 PY - 2002 DO - 10.1055/s-2002-35742 SP - 30 EP - 35 ER -