@misc{indiciae901bbcae3c87, title = {Doxycycline in acute bronchitis: a randomized double-blind trial.}, author = {E R Scherl and S L Riegler and J K Cooper}, year = {1987}, url = {https://pubmed.ncbi.nlm.nih.gov/3668366/}, note = {Source identifier: 3668366} }