TY  - RPRT
TI  - [Mucolytic therapy using N-acetylcysteine in chronic obstructive bronchitis].
AU  - H Bürgi
AU  - J Regli
PY  - 1968
DO  - 10.1055/s-0028-1110742
UR  - https://pubmed.ncbi.nlm.nih.gov/4232003/
ID  - 4232003
ER  -