Figure 1.
Identification process for eligible studies.
Abbreviations: CI, confidence interval; HR, hazard ratio; EGFR, epidermal growth factor receptor; PFS, progression-free survival; TKI, tyrosine-kinase inhibitor.
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.