At six and nine months of age it didn't seem to have an...
At six and nine months of age it didn't seem to have an effect, but by 12 months of age, when most children are starting to walk and move around a lot more, that's when we saw the effect.
At six and nine months of age it didn't seem to have an effect, but by 12 months of age, when most children are starting to walk and move around a lot more, that's when we saw the effect.