RT Journal Article SR Electronic T1 Personal choice JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 431 OP 431 DO 10.1136/adc.64.3.431 VO 64 IS 3 A1 D P Addy YR 1989 UL http://adc.bmj.com/content/64/3/431.abstract AB