Cochrane Database of Systematic Reviews (Reviews) || Long-acting beta 2 -agonist in addition to tiotropium versus either tiotropium or long-acting beta 2 -agonist alone for chronic obstructive pulmonary disease
Karner, CharlottaYear:
1996
Language:
english
DOI:
10.1002/14651858.cd008989
File:
PDF, 117 KB
english, 1996