RT Journal Article SR Electronic T1 Placental insufficiency--a questionable concept. JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 915 OP 916 DO 10.1136/adc.49.12.915 VO 49 IS 12 A1 Gruenwald, P YR 1974 UL http://adc.bmj.com/content/49/12/915.abstract AB