TY - JOUR T1 - Commentary JF - Archives of Disease in Childhood JO - Arch Dis Child SP - 642 LP - 643 DO - 10.1136/adc.69.6.642 VL - 69 IS - 6 AU - S P Conway Y1 - 1993/12/01 UR - http://adc.bmj.com/content/69/6/642.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -