TY - JOUR T1 - Dr Spencer comments JF - Archives of Disease in Childhood JO - Arch Dis Child SP - 77 LP - 78 DO - 10.1136/adc.56.1.77-b VL - 56 IS - 1 AU - G S G Spencer Y1 - 1981/01/01 UR - http://adc.bmj.com/content/56/1/77.3.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -