CRC	Colorectal Cancer
VOCs	Volatile Organic Compounds
COs	Controls
E-nose	Electronic Nose
GC-MS	Chromatography–Mass Spectrometry
OSC	Orthogonal Signal Correction
PCA	Principal Component Analysis
PLS-DA	Partial Least Squares Discriminant Analysis
LDA	Linear Discriminant Analysis
LR	Logistic Regression
k-NN	k-Nearest Neighbors
SVM	Support Vector Machine
MEMS	Microelectromechanical Systems
AUC	Area Under the Curve
ROC	Receiver Operating Characteristic
VIP	Variable Importance in Projection
TD	Thermal Desorption
RT	Retention Time