1. Scriver C.R., Feingold M., Mamues P., Childs B., Dussault J.H., Holtzman N.A., Justice P., Matalon R. Screening for congenital metabolic disordes in the newborn infant: congenital deficiency of thyroid hor mone and hyperphenylalaninemia. Pediatrics (Suppl) 60: 389, 1977.
2. Fisher D.A., Dussault J.H., Foley T.P. Jr., Klein A.H., La Branchi S., Larsen P.R., Mitchell M.I., Murphey W.H., Walfish P.G. Screening for congenital hypothyroidism: results of screening one million North American infants. J. Pediatr. 94: 700, 1979.
3. Report of the Newborn Committee of the European Thyroid Association Acta Endocrinol. (Kbh.);F Delange,1970
4. United States General Accounting Office. Preventing mental retardation — more can be done. Government Printing Office, Washington, D.C., 1977.
5. Filetti S., Pezzino V., Squatrito S., Lisi E., Vigneri R., Delange R. T3 rT3, TSH radioimmunoassay as a screening procedure for congenital hypothyroidsm. J. Nucl. Biol. Med. All. Sci. 21: 69, 1977.