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Hypothyroidism is a deficiency in thyroid hormone secretion by the thyroid gland and a defect in thyroid hormonal receptor activity. It is categorized by the two major forms in children, the one is congenital hypothyroidism and the other is acquired hypothyroidism. Congenital hypothyroidism is one of the commonest treatable causes of mental retardation and occurs in 1 in 3,000-4,000 infants... |
