Chen, H.-F., L.-X. Wu, X.-F. Li, Y.-C. Zhu, W.-X. Wang, C.-W. Xu, D.-F. Xie, J.-H. Huang, and K.-Q. Du. “A Meta-Analysis of Association Between Serum Iron Levels and Lung Cancer Risk”. Cellular and Molecular Biology, vol. 64, no. 13, Oct. 2018, pp. 33-37, doi:10.14715/cmb/2018.64.13.7.