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Period: to
Prenatal stage
Lasts from conception to birth. -
Period: to
Neonatal Stage
Birth through second week -
Period: to
Infancy Stage
Two weeks to first birthday -
Period: to
Toddler Stage
12-36 months -
Period: to
Preschool Stage
3 years old to 6th Birthday -
Period: to
School-age Stage
6 years old to 12 years old