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Comparison of the puberty of two boys and two girls in age from 11.5 to 14.6 years, among which one boy and one girl got delayed puberty
Порівняння статевого дозрівання двох юнаків і двох юнок у віці від 11.5 до 14.6 років, з яких у одного юнака і однієї юнки статеве дозрівання є затриманим