RT Journal Article SR Electronic T1 Maternal phenylketonuria: the importance of early control during pregnancy JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 114 OP 115 DO 10.1136/adc.2004.054346 VO 90 IS 2 A1 R Koch YR 2005 UL http://adc.bmj.com/content/90/2/114.abstract AB