1. Institut für Pathologie, Universitätsmedizin Greifswald, Greifswald, Germany
2. Department of Bioengineering and Therapeutic Sciences and Liver Center, University of California, San Francisco, CA, USA
3. Department of Clinical and Experimental Medicine, University of Sassari, Sassari, Italy
4. Pietro Valdoni Surgery Department, University of Rome La Sapienza, Rome, Italy
5. Institut für Pathologie, Universitätsklinikum Regensburg, Regensburg, Germany