Patients were divided into four groups based on their telomere densities of tumor cells and CAFs: group I, longer telomeres in tumor cells and longer telomeres in CAFs; group II, longer telomeres in tumor cells and shorter telomeres in CAFs; group III, shorter telomeres in tumor cells and longer telomeres in CAFs; group IV, shorter telomeres in tumor cells and shorter telomeres in CAFs. For details, see the supplementary material, Tables S3 and S4.