@misc{indiciae7de7d8e8d99e, title = {Pathophysiological relationship between the upper and lower airways.}, author = {B Drettner}, year = {1970}, doi = {10.1177/000348947007900311}, url = {https://pubmed.ncbi.nlm.nih.gov/5426882/}, note = {Source identifier: 5426882} }