PT - JOURNAL ARTICLE AU - F. A. E. Crewe TI - Medicine and Social Science AID - 10.1136/adc.30.152.303 DP - 1955 Aug 01 TA - Archives of Disease in Childhood PG - 303--309 VI - 30 IP - 152 4099 - http://adc.bmj.com/content/30/152/303.short 4100 - http://adc.bmj.com/content/30/152/303.full SO - Arch Dis Child1955 Aug 01; 30