Long-acting beta<sub>2</sub>-agonist in addition to tiotropium versus either tiotropium or long-acting beta<sub>2</sub>-agonist alone for chronic obstructive pulmonary disease.
- Published in:
- Prescriber, 2012, v. 23, n. 9, p. 42, doi. 10.1002/psb.910
- Publication type:
- Article