1. Section of Molecular Carcinogenesis, Institute of Cancer Research, Sutton, Surrey, U.K.
2. Department of Biochemistry, Charles University, Prague, Czech Republic
3. Department of Environmental Health, University of Cincinnati Medical Center, Cincinnati, Ohio, United States
4. Division of Preventive Oncology, National Center for Tumor Diseases, German Cancer Research Center (DKFZ), Heidelberg, Germany
5. Research Group Genetic Alterations in Carcinogenesis, German Cancer Research Center (DKFZ), Heidelberg, Germany