RT Journal Article SR Electronic T1 Dr Schwarz and co-authors 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 351 OP 352 DO 10.1136/adc.53.4.351-a VO 53 IS 4 YR 1978 UL http://adc.bmj.com/content/53/4/351.2.abstract AB