Fig. 2.
Distribution of the number of retrieval attempts in the combined technique group and the conventional technique group. The percentage of patients is shown in each cell.
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.