After the publication of the original article [1] in BMC Psychiatry it was brought to our attention that Figs. 3, 4, 5, 6, 7, 8 and 9 were ordered incorrectly. Please find the correct order of the figures and citations below.

Fig. 3
figure 1

The effect of risperidone and aripiprazole on challenging behaviour in children with intellectual disabilities

Full size image
Fig. 4
figure 2

The effect of aripiprazole and risperidone on weight and prolactin levels in children with intellectual disabilities and challenging behaviour

Full size image
Fig. 5
figure 3

The effect of aripiprazole and risperidone on sedation in children with intellectual disabilities and challenging behaviour

Full size image
Fig. 6
figure 4

The effect of valproate and topiramate (added to risperidone) on challenging behaviour in children with intellectual disabilities

Full size image
Fig. 7
figure 5

The effect of valproate and topiramate (added to risperidone) on weight in children with intellectual disabilities and challenging behaviour

Full size image
Fig. 8
figure 6

The effect of valproate and topiramate (added to risperidone) on sedation in children with intellectual disabilities and challenging behaviour

Full size image
Fig. 9
figure 7

The effect of N-acetylcysteine on challenging behaviour in children with intellectual disabilities

Full size image