CXCL8 and lung cancer: -A significant association between IL-6 (rs1800795, rs1800796), IL-8 (rs4075, rs2227306), IL-17F (rs763780, rs2397084) and MIF (rs755622) and the risk of lung cancer-A significant difference in mRNA expression levels of IL-6, IL-8, IL-10, IL-17 and TNF genes in lung cancer patients compared to healthy subjects