Registry to investigate the efficacy and safety of the VenaBlock © VeIn SEaling system for VaRicose veins in SingApore – Six months results of the RIVIERA trial. - Linn, YL; Yap, CJQ; Soon, SXY; Chan, SL; Khoo, VBX; Chong, TT; Tang, TY (Phlebology, 2021)