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American Academy of Pediatrics, American Thyroid Association: Newborn screening for congenital hypothyroidism: recommended guidelines.

During the past decade newborn screening for congenital hypothyroidism has become an important health activity in most developed countries. These screening programs have not only benefited patients and their families but also have produced new information about the epidemiology, pathophysiology, diagnosis, and treatment of thyroid disease in infancy and childhood. During this period of implementation and growth of the screening programs, a variety of issues and questions arose. Some of these have been resolved, and some have not. The point has now been reached where collation of the combined experiences of the North American programs can address these issues. The reader should understand that what follows reflects 0 current opinion and may require changes when the results of the next decade of screening are reviewed.