This peak incidence in early childhood is, of course, related to the fact that children are in the habit of putting objects into their mouth to determine their texture and taste, and to chew on when teething.
(This peak incidence in early childhood; is; of course; related to the fact that children are in the habit of putting objects into their mouth) (This peak incidence in early childhood; related; to the fact that children are in the habit of putting objects into their mouth) (children; are; in the habit of putting objects into their mouth)
This peak incidence in early childhood This peak incidence in early childhood children
is related are
of course related to the fact that children are in the habit of putting objects into their mouth
to the fact that children are in the habit of putting objects into their mouth
in the habit of putting objects into their mouth