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American Academy of Family Physicians: "Central precocious puberty."
Boston Children’s Hospital: "Precocious (Early) Puberty Symptoms and Causes."
Mayo Clinic: "Precocious puberty."
National Organization for Rare Disorders: "Precocious Puberty."
Kids’ Health from Nemours: "Precocious Puberty."
Nationwide Children’s: "Precocious (Early) Puberty in Children."
Stanford Children’s Health: "Precocious Puberty."