TY - JOUR T1 - Drs Roberts and Lucas comment JF - Archives of Disease in Childhood JO - Arch Dis Child SP - 208 LP - 208 DO - 10.1136/adc.61.2.208-a VL - 61 IS - 2 A2 - , Y1 - 1986/02/01 UR - http://adc.bmj.com/content/61/2/208.2.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -