RT Journal Article SR Electronic T1 Social and Biological Factors in Infant Mortality JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 101 OP 114 DO 10.1136/adc.34.174.101 VO 34 IS 174 A1 S. L. Morrison A1 J. A. Heady A1 J. N. Morris YR 1959 UL http://adc.bmj.com/content/34/174/101.abstract AB