CXCL8 and urinary bladder carcinoma: In the bladder cancer sub-population, IL-6 = −0.130+1.099 protein, R Square = 0.285 (p = <0.0001); IL-8 = −0.216+0.928 protein, R Square = 0.278 (p = <0.0001); and VEGF = −0.111+0.569 protein, R Square = 0.165 (p = 0.0001).