Owen, Caroline A., et al. “Increased Expression of A Proliferation-Inducing Ligand (APRIL) in Lung Leukocytes and Alveolar Epithelial Cells in COPD Patients With Non Small Cell Lung Cancer: A Possible Link Between COPD and Lung Cancer?”. Multidisciplinary Respiratory Medicine, vol. 11, no. 1, Apr. 2016, https://doi.org/10.4081/mrm.2016.274.