ID Author/Year Country No. of patients No. of patients Study design
TVD Non-TVD
1 Bilen/202016 Turkey 50 120 Retrospective cohort
2 Fraser/201810 USA 83 164 Retrospective cohort
3 Pourmoghadam/20185 USA 26 89 Retrospective cohort
4 Bang/20167 Korea 49 247 Retrospective cohort
5 Bol-Raap/200317 Netherlands 46 142 Retrospective cohort
6 Aeba/200318 Japan 23 64 Retrospective cohort
7 Gaynor/200019 USA 36 136 Retrospective cohort
8 Weymann/20136 Germany 20 15 Respective cohort
9 Sasson/200611 Isarel 41 53 Prospective observational