1. Genetic and Molecular Epidemiology Unit, Italian Institute for Genomic Medicine (IIGM), c/o IRCCS Candiolo , Candiolo 10060, Turin , Italy
2. Candiolo Cancer Institute, FPO IRCCS , Candiolo 10060, Turin , Italy
3. Institute of Pathology, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin , Berlin 10117 , Germany
4. German Cancer Consortium (DKTK), Partner Site Berlin, and German Cancer Research Center (DKFZ) , Heidelberg 69120 , Germany
5. Berlin Institute of Health at Charit´e - Universit¨atsmedizin Berlin , Charit´eplatz 1 , 10117 Berlin , Germany
6. Department of Clinical and Biological Sciences, University of Torino , Turin 10100 , Italy
7. Department of Oncology, Second Faculty of Medicine, Charles University and Motol University Hospital , Prague 150 06 , Czech Republic
8. Biomedical Centre, Faculty of Medicine in Pilsen, Charles University , Pilsen 32300 , Czech Republic
9. Department of Surgery, University Hospital and Faculty of Medicine in Pilsen, Charles University , Pilsen 32300 , Czech Republic
10. Department of Molecular Biology of Cancer, Institute of Experimental Medicine of the Czech Academy of Sciences , Prague 14220 , Czech Republic
11. Department of Surgery, “La Sapienza” University of Rome , Rome 00161 , Italy
12. Department of Colorectal Surgery , Clinica S. Rita , Vercelli 13100 , Italy
13. Institute of Biology and Medical Genetics, 1st Medical Faculty, Charles University , Prague 12800 , Czech Republic