Adult 1 Aged 1 Aged, 80 and over 1 Amidohydrolases 1 Carcinoma, Squamous Cell 1 DDAH2 1 DNA Methylation 1 DNA methylation 1 DNA methylation profiling DUSP1 1 Dual Specificity Phosphatase 1 1 Female 1 Gene Expression Regulation, Neoplastic 1 Humans 1 Male 1 Middle Aged 1 Mouth Neoplasms 1 Neoplasm Proteins 1 Neoplasm Staging 1 Oral Squamous Cell Carcinoma 1 Oral squamous cell carcinoma 1 Promoter Regions, Genetic 1 Promoter hypermethylation 1 Protein expression 1 Survival Analysis 1 Tumor Markers, Biological 1 adult 1 age 1 aged 1 article 1