1. Screening of newborn infants for metabolic disease;Committee on Fetus and Newborn of the American Academy of Pediatrics;Pediatrics,1965
2. A simple chromatographic screening test for the detection of disorders or amino-acid metabolism;Efron;New Engl. J. Med.,1964
3. A simple phenylalanine method for detecting phenylketonuria in large populations of newborn infants;Guthrie;Pediatrics,1963
4. Hudson , F. P. 1965 Personal communication
5. Liddell , J. 1965 Personal communication