| Seemungal et al. [486] | To study the efficacy of adding 2 × 250 mg erythromycin to the existing treatment regimen in patients with COPD | RCT | 2A+ |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.