This is a nice study. However, a small error has taken place when referring the Estonian study, ref 18. In that study, no MS levels were measured. We studied only the cavitation. Of course, there is every reason to believe that also the MS levels were reduced but there is no empirical data to show this.
A small error in references
13 August 2008
This is a nice study. However, a small error has taken place when referring the Estonian study, ref 18. In that study, no MS levels were measured. We studied only the cavitation. Of course, there is every reason to believe that also the MS levels were reduced but there is no empirical data to show this.
Competing interests
No