PT - JOURNAL ARTICLE ED - , TI - Year Book of Pediatrics (1960-1961 Year Book Series) AID - 10.1136/adc.36.186.231 DP - 1961 Apr 01 TA - Archives of Disease in Childhood PG - 231--231 VI - 36 IP - 186 4099 - http://adc.bmj.com/content/36/186/231.1.short 4100 - http://adc.bmj.com/content/36/186/231.1.full SO - Arch Dis Child1961 Apr 01; 36