CAP	cold atmospheric plasma
CBM	China Biomedical Literature Database
CDO	continuous diffusion oxygen
CI	confidence interval
CO2	carbon dioxide
DFU	diabetic foot ulcer
DFUs	diabetic foot ulcers
GRADE	Grading of Recommendations Assessment, Development and Evaluation
HBOT	hyperbaric oxygen therapy
HODFU	Hyperbaric Oxygen Therapy in Diabetics with Chronic Foot Ulcers
I2	inconsistency statistic
IWGDF	International Working Group on the Diabetic Foot
MeSH	Medical Subject Headings
NHS	National Health Service
NMA	network meta-analysis
NNT	number needed to treat
OR	odds ratio
PDGF	platelet-derived growth factor
PRISMA	Preferred Reporting Items for Systematic Reviews and Meta-Analyses
PROSPERO	International Prospective Register of Systematic Reviews
QALY	quality-adjusted life year
RCT	randomized controlled trial
REML	restricted maximum likelihood
RoB 2.0	Risk of Bias 2.0
RR	risk ratio
SOC	standard of care
SUCRA	surface under the cumulative ranking curve
TGF-β	transforming growth factor-beta
TOT	topical oxygen therapy
TWO2	cyclical topical wound oxygen
VEGF	vascular endothelial growth factor