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Diagrammatic representation of Tanner stages I to V of human breast maturation.

Diagrammatic representation of Tanner stages I to V of human breast maturation.
Diagrammatic representation of Tanner stages I to V of human breast maturation.

From Marshall WA, Tanner JM: Variations in patterns of pubertal changes in girls. Archives of Disease in Childhood 44:291–303, 1969; used with permission.