There were a number of errors in the above paper for which the author apologizes.
Where the total 1164 appears it should read 1120:
Page 65, Methods section, line 3.
Page 67, Results section, line 1.
Page 70, Table 2, column 5.
Page 72, right column, line 9.
Where the total 606 appears it should read 593:
Page 67, Results section, line 3.
Page 70, Table 2, column 3.
Where the total 558 appears it should read 527:
Page 67, Results section, line 4.
Page 70, Table 2, column 4.
Page 69, Table 2, Study no. 24 (Rossini et al. 2005):
The number of Active patients (column 4) should read 36 not 49.
The number of Sham patients (column 4) should read 16 not 47.
