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.
Time‐to‐event endpoints. Presented by allocated treatment for the population of patients who responded to chemotherapy. In all cases, patients with a second primary without a prior event were censored at the date of second primary and patients without an event were censored at the date last seen. Comparisons between groups were made using the log‐rank test.
