I am writing this comment as one of the co-authors after I corresponded with the main author of this article Dr Snezana Radic regarding the mistake which was done in percentage of boys in results.
In results there should be 49.9% of boys instead of 59.9%.
Thank you for understanding and our apology for any inconvenience.
Correction in results: percentage of boys
11 December 2014
I am writing this comment as one of the co-authors after I corresponded with the main author of this article Dr Snezana Radic regarding the mistake which was done in percentage of boys in results.
In results there should be 49.9% of boys instead of 59.9%.
Thank you for understanding and our apology for any inconvenience.
Competing interests
None declared