RT Journal Article SR Electronic T1 Blood Formation in Infancy JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 214 OP 221 DO 10.1136/adc.27.133.214 VO 27 IS 133 A1 Douglas Gairdner A1 John Marks A1 Janet D. Roscoe YR 1952 UL http://adc.bmj.com/content/27/133/214.abstract AB