What conclusions should be drawn?
Although this study demonstrated statistically significant associations between prenatal and postnatal exposures to mobile phones and behavioural difficulties in children, the authors failed to adjust for a number of possible confounding factors. The exposure assessment was limited and probably resulted in misclassification because of maternal recall bias. Therefore there is need for caution in accepting these results at face value. Comments to Imo.Inyang@med.monash.edu.