In which age incidence of invagination is most frequent?
A. Newborn
B. 3 - 9 months
C. 1 year
D. Preschooler age
E. School age
Answer: B. 3 - 9 months
In which age incidence of invagination is most frequent?
A. Newborn
B. 3 - 9 months
C. 1 year
D. Preschooler age
E. School age
Answer: B. 3 - 9 months