CRC	Colorectal Cancer
FIT	Fecal Immunochemical Tests
gFOBT	Guaiac-based Fecal Occult Blood Tests
OBT	Occult Blood Tests
F	Female
M	Male
GC	Gastric Cancer
CR Adenoma	Colorectal Adenoma
IBD	Inflammatory Bowel Diseases
ND	No Data
SOD	Superoxide Dismutase
CAT	Catalase
GPx	Glutathione Peroxidase
GR	Glutathione Reductase
UA	Uric Acid
GSH	Reduced Glutathione
TAC	Total Antioxidant Capacity
TOS	Total Oxidant Status
LPO	Lipid Peroxidation
FRAP	Ferric Reducing Ability
AGEP	Advanced Glycation End Products
AOPP	Advanced Oxidation Protein Products
MDA	Malondialdehyde
OSI	Oxidative Stress Index
VOCs	Volatile Organic Compounds