1. University of Heidelberg; Department of Cardiology; Heidelberg Germany
2. Russell H. Morgan Department of Radiology and Radiological Sciences; Division of MR Research; Johns Hopkins University School of Medicine; Baltimore Maryland USA
3. Center for Biomedical Imaging (CIBM); University Hospital Lausanne; Switzerland
4. University of Applied Sciences Gelsenkirchen; Department of Physical Engineering; Gelsenkirchen Germany