PTGS2 and hepatocellular carcinoma: It seemed that COX-2-765G/C was not correlated with susceptibility to HCC in Chinese population (C vs G: OR = 1.665, 95%CL 0.783–3.541, PA = 0.186; GC vs GG: OR = 1.657, 95%CL 0.747–3.675, PA= 0.234; GC+CC vs GG: OR = 1.691, 95%CL 0.757–3.777, PA= 0.200).