Key Laboratory of OptoElectronic Science and Technology for Medicine;
Ministry of Education;
Fujian Provincial Key Laboratory for Photonics Technology;
Fujian Normal University;
Fuzhou 350007;
China;
Clinical Oncology School of Fujian Medical University;
Fujian Cancer Hospital;
Fuzhou 350014;
China;
Combining urine surface-enhanced Raman spectroscopy; PCA-SVM algorithm for improving; colorectal cancer at different stages; Raman;