What are pediatric age ranges?

The following are common pediatric age ranges:

- Neonatal period: Birth to 28 days

- Infancy: Birth to 12 months

- Early childhood: 1 to 3 years

- Preschool age: 3 to 5 years

- School age: 6 to 12 years

- Adolescence: 13 to 18 years

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