The authors found that the unit of serum MMP-9 levels was not correct. Therefore, the authors corrected the unit of serum MMP-9 concentration in the Figure 2 and Figure 3. In addition, the authors corrected the following sentence in the Results section:
Serum levels of MMP-9 (452.0 ± 169.0 ng/mL) in patients (n=69) were no different (p=0.453) from those (462.9 ± 269.4 ng/mL) in controls (n=78)(Figure 2).
The corrected Figure 2 can be viewed here:
The corrected Figure 3 can be viewed here:
Footnotes
Competing Interests: No competing interests declared.