1. Institute of Pathology, Molecular Pathology Division; University Hospital of Basel; Basel Switzerland
2. Laboratory of Experimental Carcinogenesis, Center for Cancer Research; National Cancer Institute, NIH; Bethesda MD USA
3. Research Group Human Genetics, Department of Biomedicine, University of Basel and Division of Medical Genetics; University Children's Hospital; Basel Switzerland
4. Department of Clinical Medicine and Surgery; Federico II University Medical School; Naples Italy
5. Department of Biomedicine, Institute of Biochemistry and Genetics; University of Basel; Basel Switzerland
6. Department of Biomedicine, Hepatology Laboratory; University of Basel; Basel Switzerland
7. Helmholtz-University-Group “Molecular RNA Biology & Cancer,” German Cancer Research Center (DKFZ) and Institute of Pathology; University Hospital Heidelberg; Heidelberg Germany