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.
A, Bystander, (B) EMS‐responder. Adjusted odds ratio (95% CI) was significantly different (reference, 2005). CoSTR indicates international consensus on cardiopulmonary resuscitation and emergency cardiovascular care science with treatment recommendations; CPR, cardiopulmonary resuscitation; and EMS, emergency medical service.
