TY - JOUR T1 - Drs. Lauder and Ellis reply as follows JF - Archives of Disease in Childhood JO - Arch Dis Child SP - 253 LP - 254 DO - 10.1136/adc.52.3.253-a VL - 52 IS - 3 AU - I. Lauder AU - H. A. Ellis Y1 - 1977/03/01 UR - http://adc.bmj.com/content/52/3/253.2.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -