| Reference | Objective | Design | Evidence |
|---|---|---|---|
| Van Schayck et al. [223] | To investigate the effectiveness of case finding of patients at risk of developing chronic obstructive pulmonary disease | CSS | 4A+ |
| Broekhuizen et al. [224] | To review the literature on detection of COPD in patients with cough in primary care | MA | 1C? |
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.