@article{sevik_canakci_2022,  title={Doxofylline in acute exacerbation of chronic obstructive pulmonary disease},  volume={68},  ISSN={0104-4230},  url={https://doi.org/10.1590/1806-9282.20211294},  DOI={10.1590/1806-9282.20211294},  number={3},  journal={Revista da Associação Médica Brasileira},  publisher={Associação Médica Brasileira},  author={Sevik, Omer Erdem and Canakci, Mustafa Emin},  year={2022},  month={Mar},  pages={302–302} }