RT Journal Article SR Electronic T1 Drs Puntis, Ball, Preece, et al comment JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 337 OP 337 DO 10.1136/adc.65.3.337 VO 65 IS 3 YR 1990 UL http://adc.bmj.com/content/65/3/337.2.abstract AB