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.
Kaplan Meier analysis of pain relief duration in each type of nerve block (A) and in the classified three groups (B) after the first trigeminal nerve block with alcohol. 1= V2+3, 2=V2, 3=V3, 4=V2+V3, 5=supraorbital nerve block (SONB) or infraorbital nerve block (IONB), 6= main branch block with sonb or ionb, others = V2 block, V2+V3 block, sonb or ionb, main branch block with sonb or ionb.
