@misc{indiciaebf534a539dd5, title = {Exhaled biomarkers.}, author = {Sergei A Kharitonov and Peter J Barnes}, year = {2006}, doi = {10.1378/chest.130.5.1541}, url = {https://pubmed.ncbi.nlm.nih.gov/17099035/}, note = {Source identifier: 17099035} }