1 Subjects: “...Double-Blind Method...”

2 Subjects: “...Double-Blind Method...”

3

4

5 “... such as kidney failure and blindness...”

6 “... such as kidney failure and blindness...”

7 “... was similar, and (4) studies were double-blinded randomized controlled trials of low or medium risk of bias...”

8 “... was similar, and (4) studies were double-blinded randomized controlled trials of low or medium risk of bias...”

9