@article{{MRA}{}, author = {Frizzelli, R.}, title = { COPD and Unexplained Hypoxaemia: a combination to be explored}, journal = {Medical Research Archives}, volume = {11}, number = {11}, year = {2023}, doi = {10.18103/mra.v11i11.4648}, url = {https://esmed.org/MRA/mra/article/view/4648} }