PT - JOURNAL ARTICLE AU - Illingworth, R. S. TI - Correspondence AID - 10.1136/adc.42.223.340-a DP - 1967 Jun 01 TA - Archives of Disease in Childhood PG - 340--340 VI - 42 IP - 223 4099 - http://adc.bmj.com/content/42/223/340.2.short 4100 - http://adc.bmj.com/content/42/223/340.2.full SO - Arch Dis Child1967 Jun 01; 42