TY  - JOUR 
T1  - Has external banding become a historical technique during venous valve repair?
JO  - Revista da Associação Médica Brasileira
A1  - Us, Melih Hulusi
A1  - Ugur, Murat
SN  - 0104-4230
UL  - 10.1590/1806-9282.20210721
VL  - 67 
Y1  - 2021
PB  - Brasil 
ER  -