Every year, about a quarter of all children sustain an injury serious enough to require medical attention, school absences, and/or bed rest.
Medical staff tend to children every year.
( z1 tend :ARG0 ( z2 staff :mod ( z3 medicine ) ) :ARG1 ( z4 child ) :frequency ( z5 rate-entity :ARG3 ( z6 temporal-quantity :quant 1 :unit ( z7 year ) ) ) )