PT - JOURNAL ARTICLE AU - J B Holton TI - Large-scale investigation of 2 phenylketonuria screening methods and factors affecting blood phenylalanine levels in the newborn. AID - 10.1136/adc.48.2.161 DP - 1973 Feb 01 TA - Archives of Disease in Childhood PG - 161--161 VI - 48 IP - 2 4099 - http://adc.bmj.com/content/48/2/161.1.short 4100 - http://adc.bmj.com/content/48/2/161.1.full SO - Arch Dis Child1973 Feb 01; 48