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.
Bars show mean concentrations of chromium and nickel in tissue and error bars show standard error of the mean. The differences between the concentrations preoperatively and at the time of bar removal were statistically significant (**p<0.001).
