TY  - RPRT
TI  - Anticholinergic bronchodilators in combination.
AU  - R Pineda
AU  - S I Rennard
PY  - 2000
DO  - 10.1517/14656566.1.7.1281
UR  - https://pubmed.ncbi.nlm.nih.gov/11249465/
ID  - 11249465
ER  -