110 The scientists came to the conclusion that the use of filigree metal grid structures (better known as stents) used to eliminate impaired blood circulation in the coronary arteries often does not achieve the level of safety and quality of more conventional but far more complex bypass heart operations. With the study's findings, specialists are now able to chose the optimum method in each case, thus reducing the risk of heart attack and significantly improving the quality of life for patients. Together with the José Carreras Foundation we are building a "Carreras Leukemia Center" at the Marburg site. Here efforts are being concentrated on developing efficient therapies from the close collaboration between research and healthcare in the field of leukaemia treatment. In the area of university training, the universities in Gießen and Marburg as well as Herzzentrum Leipzig GmbH as an integral part of the University of Leipzig are responsible for both theoretical and practical training of medical students. A further 14 Group hospitals enjoy the status of academic teaching hospital whose tasks include the practical training of prospective medical professionals. The examples cited are representative of numerous other cases in which patients directly benefit from the findings of research projects and clinical trials. Further details of good and trusted co-operation between independent science and patient care are provided from page 68 of this Annual Report. CONSOLIDATED TREND Sites, capacities and services With its 48 hospitals in Germany and a market share of approximately 3.5% with reference to capacities or revenues, RHÖN-KLINIKUM AG is a leading provider of acute-care hospital services, which accounts for around 97% of consolidated revenues. For historical reasons, we also have rehabilitation hospitals at some sites; the area of outpatient medical care centres is currently being established. These latter two areas do not satisfy the size requirements for segment reporting. The Group is horizontally structured. The hospital companies are organised in the form of legally independent corporations and have their registered office at the respective facility site. They are direct subsidiaries of the ultimate parent company that has its registered office in Bad Neustadt a.d.Saale. In addition to the hospitals at parent company headquarters in Bad Neustadt a.d.Saale, other major sites are our medical science centres in Gießen, Marburg and Leipzig as well as the hospital sites having a supraregional catchment area in Bad Berka, Frankfurt (Oder), Hildesheim, Karlsruhe, Munich, Pforzheim and Wiesbaden. The MVZ companies are subsidiaries of a hospital company based in Bad Neustadt a.d.Saale, which is authorised to provide services within the meaning of German legislation applicable to doctors accredited by statutory health insurance bodies. management report consolidated trend