Table 2 footnote Ian Paul, Penn State College of Medicine 1 August 2014 Please note that the modified measures were indeed confirmed, but we did not notice our typographical error prior to publication. The footnote should read: "*Modified measure" Competing interests None declared
Table 2 footnote
1 August 2014
Please note that the modified measures were indeed confirmed, but we did not notice our typographical error prior to publication. The footnote should read:
"*Modified measure"
Competing interests
None declared