CAD and head and neck squamous cell carcinoma: Since the AbsCC had low power regarding discrimination of HNSCC-CPs and HAs, the RelCCs of nine leukocyte subsets (granulocytes, neutrophils, lymphocytes, T-lymphocytes, T-helper cells, cytotoxic T-cells, monocytes, classical monocytes, and nonclassical monocytes) were calculated and differed significantly (Table 2).