Authors | Year | Study design | Sample | comparison | Country |
---|---|---|---|---|---|
Li et al | 2009 | Cohort | 63 vs 74 | WT vs No test | Germany |
Liu et al | 2012 | RCT | 53 vs 54 | WT vs No test | China |
Leelawat et al | 2012 | Cohort | 30 | WT + saline test | Thailand |
Linke et al | 2015 | Cohort | 32 vs 93 | WT vs No test | Germany |