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Characteristics of subjects with early-onset CRC. CRC, colorectal cancer; FAP, familial adenomatous polyposis; PJS, Peutz-Jeghers syndrome; HNPCC, hereditary non-polyposis colorectal cancer; AC, Amsterdam I or II criteria; BETH, Bethesda criteria; PMTs, primary multiple tumors; FDR, first-degree relative; SDR, second-degree relative.
